3.6 diplacement?

[Dubguy21]

I just had a thought. There may be too little traffic for an answer, but within reason, could a 3.6 be punched out to 3.8, or even 4.0? I'm familiar with the idea, just curious if anyone has tried anything crazy like this. I know the 3.2 has been opened up to a 3.3, and a 3.4 I think.

Just an idea, maybe something I'd like to accomplish later on...

[AXZ]

Eurospec via new crankshaft will do a 3.8 conversion

http://eurospecsport.com/products/en...ce-engines.htm

regards

[need_a_VR6]

I don't think they have a 10deg crank.

[Fyalinks]

I just had a thought. There may be too little traffic for an answer, but within reason, could a 3.6 be punched out to 3.8, or even 4.0? I'm familiar with the idea, just curious if anyone has tried anything crazy like this. I know the 3.2 has been opened up to a 3.3, and a 3.4 I think.

Just an idea, maybe something I'd like to accomplish later on...

Bump for a good topic. Some of the reputable engine guys need to share some knowledge on this.

Eurospec doesn't have any info on their site about that 100mm crank and those custom blocks are still limited to the flow of the R32 head and intake manifold.

On another note, is the 3.6 ecu really that difficult to have imo-defeated?

[SilverTrek12v]

The imo-defeat is already available thru, United Motorsport or Unitronic.

Here in montreal their are 3 3.6fsi swaps in mk3's-corrado.

We talked to europsec this week and they say the r32 cams fit the 3.6

[Dubguy21]

Good info so far, but with it being a custom setup(internals), could the 3.6 block be bored out a 4.0?

[need_a_VR6]

We talked to europsec this week and they say the r32 cams fit the 3.6

Not mk4 ones.

[tom8thebomb]

The imo-defeat is already available thru, United Motorsport or Unitronic.

lets be clear about this.....
imo defeat is only available through um.

Here in this US we have an OEM r36 in an 08 body.

[Fyalinks]

This is all very good informations. Thanks to everyone for your input and for giving life to this subject. Now, so far this is what's we have here:

Imo-defeat: United Motorsport
Bore and Stroke: TBD / This info would include a larger crank for those who are interested.
Cams: TBD
Tune: TBD / I suspect UM would also be able to do this if they can manage the imo defeat.

Ok, lets keep the good info coming!

[tom8thebomb]

I suspect UM would also be able to do this if they can manage the imo defeat.

Done.

[77dragrabbit]

I am thinking about a 3.6 or 3.8 for my R32. I have driven the Eurospec 3.6 jetta and I have not stopped thinking about it since.

I speculate the 3.6 with cams is pushing 300 HP. BTW the 3.6 and 3.2 Heads have the same valves in Etka.

[Dubguy21]

Well there's some more good info, Keep it coming guys. I'm starting to build a parts list.

[SilverTrek12v]

Eurospec recommends their 260/264 cams for the 3.6

[tom8thebomb]

I am thinking about a 3.6 or 3.8 for my R32. I have driven the Eurospec 3.6 jetta and I have not stopped thinking about it since.

I speculate the 3.6 with cams is pushing 300 HP. BTW the 3.6 and 3.2 Heads have the same valves in Etka.

FSI is superb, working on diagrams for this swap. would you be interested in something?

[need_a_VR6]

Wonder why they dont recommend the 268/264s over the lower duration ones.

[77dragrabbit]

From a lay person perspective don't stroker engines in general build power down low aka. torque?

My guess is that the engine itself is less happy with long cams. Especially the 3.8. Plus the ECU might have a tough time with the overlap, lopey idle, VVT etc. on the long cams.

[need_a_VR6]

Yes more torque and more vacuum, which makes larger duration cams even milder.

The vvt should really make that a non issue as there is no overlap with the exh cam advanced.

[77dragrabbit]

That may be the case ith the VVT but I would wonder about the overlap at idle due to the duration. I have heard that the ECU picks up the lumpy idle pulses as misfires and throw codes.

[need_a_VR6]

There is none at idle, the exhaust cam is advanced then. It retards to base around 1200 rpm on stock programming.

On my 3.2 my idle was smoother at 500 rpm with a plug wire pulled then my 12v ever was. Gotta love vvt.