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    Thread: audi s4 4.2 full motor buildup.

    1. Member Blu--Pearl's Avatar
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      02-07-2012 11:41 AM #1
      Want to know if anyone has done a full motor build or at least the heads on the s4 and what kind of gain can be had.

    2. Member Blu--Pearl's Avatar
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      02-08-2012 02:46 PM #2
      guess this motor is waste of time. i take it!

    3. Member Blu--Pearl's Avatar
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      02-09-2012 01:04 PM #3

    4. Member Blu--Pearl's Avatar
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      02-09-2012 02:54 PM #4
      buy them

    5. Member alpineskiman's Avatar
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      02-09-2012 06:49 PM #5
      Try audizine.com

      you'll have better luck there.

    6. Member Blu--Pearl's Avatar
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      02-10-2012 09:30 AM #6
      thanks

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      05 s4 vert, and an 05 mazda 6 time attack car.why? because racecar
      02-11-2012 02:35 AM #7
      if by chance you find what your looking for can you post a link here to what you find ?

    8. Member Blu--Pearl's Avatar
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      02-13-2012 10:12 AM #8
      well what i found out and also talking to a shop here in orlando that builds bmw and audi's they said unless u go super charger building an all motor s4 wont net u much. No one make a stroker kit for the s4. All motor will cost to much. And u would have to have custom pistons maid becuz none are pre-maid. 034 motorsports has a set of rods but that about it. The heads can be built and will net u gains about 60-70whp and that about it. And that will cost about 4-5k.

      So anyone that wants 400-500awhp s4 to supercharger with meth.

      Anyone wanting 500-700awhp s4 do fully built heads and throw some rods in and get the charger kit with some meth or supporting mods

    9. Member Blu--Pearl's Avatar
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      02-13-2012 03:34 PM #9

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      05 s4 vert, and an 05 mazda 6 time attack car.why? because racecar
      02-13-2012 10:49 PM #10
      thanks man. i kinda had the feeling this was one of those motors. but thanks for posting back .

    11. Member Blu--Pearl's Avatar
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      02-14-2012 10:26 AM #11
      no prob.

    12. Member COSitsWORTHit's Avatar
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      02-14-2012 04:40 PM #12
      Well, first determine how much horsepower to the ground you can handle in an AWD car.

      300 to the wheels is fast and newbs to the awd car will be giggling school girls for years with that much power

      400 to the wheels requires FI and is ridiculous amount of acceleration and power. JHM is not even close to that on their all motor cars and they are running 12.70 at 111

      If you are one of those that says "yea but its so much easier to get 400+awhp in an EVO or STI so I'm gonna get that" well..you haven't really considered a b6/7 S4 for what it was meant to be.
      This not a "insertawdturbocarhere". This is a luxury car that has respectable hp. Is fast enough stock for most of the original buyers and running 12 sec 1/4's is all you will ever need if you have all the boltons and a JHM tune.

      Most people and enthusiast can't handle more than 300awhp anyway. This is nothing like your fwd or rwd cars.
      Last edited by COSitsWORTHit; 02-14-2012 at 05:16 PM.

    13. Member Axel-'s Avatar
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      02-14-2012 11:38 PM #13
      I have the JHM stage 1 supercharger (approx. 400 awhp). JHM is about 9-12 months away from stage 2 and 3 which will require an engine rebuild with stronger internals (which they're putting together for their stage 2 and 3 kits). So I might get back to you in a year's time lol.
      Sprint Blue B7 S4 Avant 6MT - 421whp/350wtq
      JHM Stage 1 SC - JHM SS - JHM IM - JHM IS - JHM Stg 4 clutch - JHM LWFW - 19" O.Z. Ultraleggera - Stoptech ST-60 BBK - KW v3 CO - Apikol rear diff mount - Trexturk DP - Magnaflow CB - Hotchkis RS4 RSB - Apikol snub mount - Stern Motor mounts - 034 Adj FUCA - RS4 Pedals - TT-RS MFSW - Zada-Tech Gauges - STE Gauges - Dynavin D99 Android

    14. Member Blu--Pearl's Avatar
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      02-15-2012 11:16 AM #14
      Quote Originally Posted by COSitsWORTHit View Post
      Well, first determine how much horsepower to the ground you can handle in an AWD car.

      300 to the wheels is fast and newbs to the awd car will be giggling school girls for years with that much power

      400 to the wheels requires FI and is ridiculous amount of acceleration and power. JHM is not even close to that on their all motor cars and they are running 12.70 at 111

      If you are one of those that says "yea but its so much easier to get 400+awhp in an EVO or STI so I'm gonna get that" well..you haven't really considered a b6/7 S4 for what it was meant to be.
      This not a "insertawdturbocarhere". This is a luxury car that has respectable hp. Is fast enough stock for most of the original buyers and running 12 sec 1/4's is all you will ever need if you have all the boltons and a JHM tune.

      Most people and enthusiast can't handle more than 300awhp anyway. This is nothing like your fwd or rwd cars.


      To be honest i think jhm has done a awesome job on providing bolt on parts that can bring the NA s4 to life. But sure some will agree that the s4 for the money spent is greatly under powered. Most would be happy if the s4 came stock making 300awhp. Running mid 12 in the 1/4 from a 4.2 v8 isn't all that great. Just saying! the thing is the 4.2 v8 is a strong motor and can handle 400awhp stock untouched so why did audi under power it.

      If anyone is interested take a look at mrc tuning out in the UK and u will see what a NA 4.2 v8 can do when u really puched with some really good mods. And there supercharge s4 and sr4 are make 500-600+awhp. Check it out!

    15. Member Axel-'s Avatar
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      02-15-2012 03:27 PM #15
      Quote Originally Posted by Blu--Pearl View Post
      To be honest i think jhm has done a awesome job on providing bolt on parts that can bring the NA s4 to life. But sure some will agree that the s4 for the money spent is greatly under powered. Most would be happy if the s4 came stock making 300awhp. Running mid 12 in the 1/4 from a 4.2 v8 isn't all that great. Just saying! the thing is the 4.2 v8 is a strong motor and can handle 400awhp stock untouched so why did audi under power it.
      Seriously? Every auto manufacturer "underpowers" their motors. It's a safety margin. The RS4 4.2 can handle even more power than the S4 4.2 with stock internals, etc. It's the same with American and Asian cars. All have a safety margin.

      Quote Originally Posted by Blu--Pearl View Post
      If anyone is interested take a look at mrc tuning out in the UK and u will see what a NA 4.2 v8 can do when u really puched with some really good mods. And there supercharge s4 and sr4 are make 500-600+awhp. Check it out!
      Yeah, but they won't go to the dragstrip which is 30 miles down the road for them. They prefer to have "dyno days" where everyone jumps on the dyno and pats themselves on the back. I call bs on all that dyno crap until you show me proper real world gains.
      They use a TTS Rotrex centrifugal supercharger (at least for the RS4).
      I'll totally admit they have nice dyno numbers but until they take their cars to their neighborhood IHRA strip, it doesn't mean much to me. We've seen PES and VF put down some decent dyno numbers only to be obliterated on the track.

      As for JHM, the supercharger they picked is good for 800 crank hp (630-650 awhp) so within the same ballpark (hopefully available early next year).
      Sprint Blue B7 S4 Avant 6MT - 421whp/350wtq
      JHM Stage 1 SC - JHM SS - JHM IM - JHM IS - JHM Stg 4 clutch - JHM LWFW - 19" O.Z. Ultraleggera - Stoptech ST-60 BBK - KW v3 CO - Apikol rear diff mount - Trexturk DP - Magnaflow CB - Hotchkis RS4 RSB - Apikol snub mount - Stern Motor mounts - 034 Adj FUCA - RS4 Pedals - TT-RS MFSW - Zada-Tech Gauges - STE Gauges - Dynavin D99 Android

    16. Member Blu--Pearl's Avatar
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      02-15-2012 03:45 PM #16


      yea as of now my money is on jhm, they have proven to make good gains over most of the other company's. And im sure they will come out with a killer real world power supercharger kit.

    17. Member Axel-'s Avatar
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      02-15-2012 03:53 PM #17
      Quote Originally Posted by Blu--Pearl View Post


      yea as of now my money is on jhm, they have proven to make good gains over most of the other company's. And im sure they will come out with a killer real world power supercharger kit.
      Yeah, JHM has a few things going for them. 1) They test the **** out of their products. This is why they're always last to market. Over 2 years of planning, designing, in-house testing (to the point where they deliberately blew up an S4 4.2 to see how far they could take it) and then beta-testing for their supercharger kit. 2) They stand behind their product. If you have concerns/issues, they'll take care of you. 3) Knowledgeable folks.

      Their customer service might be hit and miss cause they're small with very little staffing and they may take a while to get back to people sometimes but they're honest and do their due diligence which is what's important to me personally. I may have to wait a few days to hear back from them but that's a small price to pay for quality products.

      I can't speak for the rest of them but I have read too many threads of VF and PES screwing customers over (such as a blown engine due to bad supercharger tunes from lack of testing and skill and then leaving the customer hanging with the cost).

      Edit: Oh and I forgot to mention whenever JHM comes out with a performance mod, they actually go to the 1/4 mile track and publish videos and time slips to prove their product works.
      Last edited by Axel-; 02-15-2012 at 03:58 PM.
      Sprint Blue B7 S4 Avant 6MT - 421whp/350wtq
      JHM Stage 1 SC - JHM SS - JHM IM - JHM IS - JHM Stg 4 clutch - JHM LWFW - 19" O.Z. Ultraleggera - Stoptech ST-60 BBK - KW v3 CO - Apikol rear diff mount - Trexturk DP - Magnaflow CB - Hotchkis RS4 RSB - Apikol snub mount - Stern Motor mounts - 034 Adj FUCA - RS4 Pedals - TT-RS MFSW - Zada-Tech Gauges - STE Gauges - Dynavin D99 Android

    18. Member Blu--Pearl's Avatar
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      02-16-2012 10:13 AM #18
      Yea man i watch pretty much all there vids for there stuff. See that most of the s4 guys are going with jhm says alot. And from what ive seen pretty much everyone is maken more power with jhm products.

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      02-16-2012 01:02 PM #19
      im excited to see how good there products are. im buying the manifold and the tune this weekend actually.

    20. Member Axel-'s Avatar
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      02-16-2012 02:24 PM #20
      Quote Originally Posted by 1lowmk2 View Post
      im excited to see how good there products are. im buying the manifold and the tune this weekend actually.
      The tune will completely change your car although it really shines with a proper 2.5" catless downpipe/catback setup. You'll notice the throttle is way more sensitive. Just give it a week or two for your brain and feet to adjust.

      The manifold looks sweet (which color did you end up going with?) and it's a nice piece of the puzzle.

      I just did a 3rd gear pull last night and managed a peak 878 rpm/sec with an average 780 rpm/sec and an 800 rpm/sec median.
      Also calculated my FATS time at 2.812 seconds (FATS time is a B5 S4/RS4 measure which is the time it takes to go from 4200 rpms to 6500 rpms in 3rd gear)
      Sprint Blue B7 S4 Avant 6MT - 421whp/350wtq
      JHM Stage 1 SC - JHM SS - JHM IM - JHM IS - JHM Stg 4 clutch - JHM LWFW - 19" O.Z. Ultraleggera - Stoptech ST-60 BBK - KW v3 CO - Apikol rear diff mount - Trexturk DP - Magnaflow CB - Hotchkis RS4 RSB - Apikol snub mount - Stern Motor mounts - 034 Adj FUCA - RS4 Pedals - TT-RS MFSW - Zada-Tech Gauges - STE Gauges - Dynavin D99 Android

    21. Member Blu--Pearl's Avatar
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      02-17-2012 10:09 AM #21


      do u have any vids or pics of yur setup

    22. Member Axel-'s Avatar
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      02-17-2012 12:08 PM #22
      Quote Originally Posted by Blu--Pearl View Post


      do u have any vids or pics of yur setup
      It's really not much. Just a really short drive-by clip http://www.youtube.com/watch?v=aPzn2dtuLbI

      I actually posted on AZ yesterday (in my regional section) asking if anyone wanted to go out and take some videos on Sunday. I need more hehe.

      As for pics, here are a few from last summer (still a work in progress):






      Sprint Blue B7 S4 Avant 6MT - 421whp/350wtq
      JHM Stage 1 SC - JHM SS - JHM IM - JHM IS - JHM Stg 4 clutch - JHM LWFW - 19" O.Z. Ultraleggera - Stoptech ST-60 BBK - KW v3 CO - Apikol rear diff mount - Trexturk DP - Magnaflow CB - Hotchkis RS4 RSB - Apikol snub mount - Stern Motor mounts - 034 Adj FUCA - RS4 Pedals - TT-RS MFSW - Zada-Tech Gauges - STE Gauges - Dynavin D99 Android

    23. Member Blu--Pearl's Avatar
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      02-17-2012 03:16 PM #23
      Quote Originally Posted by Axel- View Post
      It's really not much. Just a really short drive-by clip http://www.youtube.com/watch?v=aPzn2dtuLbI

      I actually posted on AZ yesterday (in my regional section) asking if anyone wanted to go out and take some videos on Sunday. I need more hehe.

      As for pics, here are a few from last summer (still a work in progress):







      whatever dude car is clean. and man if u lived in orlando fl. pics and vids can be done anytime. its what i do for a living gat any engine bay shots.

    24. Member Axel-'s Avatar
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      02-17-2012 03:40 PM #24
      Quote Originally Posted by Blu--Pearl View Post
      whatever dude car is clean. and man if u lived in orlando fl. pics and vids can be done anytime. its what i do for a living gat any engine bay shots.
      Yeah, much nicer weather down there lol

      As for the engine shot, sure, but you can't see much as the JHM supercharger is located behind the passenger fog light, not on top of the manifold.


      Sprint Blue B7 S4 Avant 6MT - 421whp/350wtq
      JHM Stage 1 SC - JHM SS - JHM IM - JHM IS - JHM Stg 4 clutch - JHM LWFW - 19" O.Z. Ultraleggera - Stoptech ST-60 BBK - KW v3 CO - Apikol rear diff mount - Trexturk DP - Magnaflow CB - Hotchkis RS4 RSB - Apikol snub mount - Stern Motor mounts - 034 Adj FUCA - RS4 Pedals - TT-RS MFSW - Zada-Tech Gauges - STE Gauges - Dynavin D99 Android

    25. Member Blu--Pearl's Avatar
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      02-17-2012 03:56 PM #25
      Quote Originally Posted by Axel- View Post
      Yeah, much nicer weather down there lol

      As for the engine shot, sure, but you can't see much as the JHM supercharger is located behind the passenger fog light, not on top of the manifold.



      yea i know just wanted to see how clean the install and how stock looking everything looks. Love it i cant wait to have one

    26. 02-21-2012 06:45 AM #26
      Funny I didnt know I was a member on this forum until I found this thread via Google lol. Blu-pearl my s4s engine is dead and ive been contemplating different options. Im new to Orlando and dont know of ANY good shops to discuss repairs with. You said you know a shop in this area can you shoot me a PM or something with the shops details and contact info. Thanks.

      Rob

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      02-22-2012 09:40 AM #27
      Audi sport sells 4.2 engines in 450hp 550 and 650 hp spec out of the create. It is what Spyker uses in there cars. If you have the paper to back this statement hahahahah

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      02-23-2012 11:51 AM #28
      I'm hoping to get my car back today or tomorrow, what I got so far is the milltek downpipes , and a magnaflow exhaust, and the jhm tune and a custom intake. Ima run it at the track this Sunday see what it does in the 1/4 mile. And by next week I should have the manifold , so after the manifold comes is ima get it installed , along with a method kit and then dyno it and hit the track again next Sunday . So see how much of a difference it does in the 1/4.and oh I got the manifold in the stock color I didn't wanna wait the extra week or so, I have a big track event coming up so I didn't wanna miss it

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      05 s4 vert, and an 05 mazda 6 time attack car.why? because racecar
      02-23-2012 11:52 AM #29
      * sorry meant to say meth kit.

    30. Member Axel-'s Avatar
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      02-23-2012 01:11 PM #30
      Quote Originally Posted by 1lowmk2 View Post
      I'm hoping to get my car back today or tomorrow, what I got so far is the milltek downpipes , and a magnaflow exhaust, and the jhm tune and a custom intake. Ima run it at the track this Sunday see what it does in the 1/4 mile. And by next week I should have the manifold , so after the manifold comes is ima get it installed , along with a method kit and then dyno it and hit the track again next Sunday . So see how much of a difference it does in the 1/4.and oh I got the manifold in the stock color I didn't wanna wait the extra week or so, I have a big track event coming up so I didn't wanna miss it
      Would be interesting to see the difference between your custom intake and the stock intake, both on the dyno and the 1/4 mile (more the 1/4 mile due to the forward velocity). Might be too much to ask though hehe

      Good luck and let us know how you did.
      Sprint Blue B7 S4 Avant 6MT - 421whp/350wtq
      JHM Stage 1 SC - JHM SS - JHM IM - JHM IS - JHM Stg 4 clutch - JHM LWFW - 19" O.Z. Ultraleggera - Stoptech ST-60 BBK - KW v3 CO - Apikol rear diff mount - Trexturk DP - Magnaflow CB - Hotchkis RS4 RSB - Apikol snub mount - Stern Motor mounts - 034 Adj FUCA - RS4 Pedals - TT-RS MFSW - Zada-Tech Gauges - STE Gauges - Dynavin D99 Android

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      02-26-2012 12:29 AM #31
      So I got my car back, I got the downpipes installed , along with deleting the mufflers , and the jhm 93 octane tune. The only down fall is the catted down pipes I bought the previous owner knocked out the catts, but my car sounds like a Chevy 350 idling. And its loud but it sounds good

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