How big can a 3.2 engine safely get?

[NY65912]

We hit 353 rwhp on the dyno, factor in a 15% drivetrain loss it was about 415 hp at the crank.

Good Luck

[Allan Kelsey]

Mike,
That 415crank HP is insane!!!!
No wonder it was a little pricey - phew.

OZracer, that Dixon engine mod does look very approachable. Im curious what a build like that might costs these days, but it certainly will get me close to my power goal.

[Tippy]

We hit 353 rwhp on the dyno, factor in a 15% drivetrain loss it was about 415 hp at the crank.



Good Luck

I got 406, but nonetheless, that is crazy power!

[NY65912]

The engine was built with among other things 2" NASCAR bearings, stroked and drilled crank and cams that were good for 8600 rpm redline, it made power straight thru the redline. Loved that beast.

[r-mm]

Allan - take a look at this thread. Pretty intoxicating stuff! Not totally sure what the 100mm pistons for the 3.5 build cost these days though (thread 10 years old and OP gets his parts wholesale it seems) 3.2L to 3.5L Dyno RESULTS

[JeremyD]

That was my engine - it ran like a top

Oh Dyno we will go...

[r-mm]

For the OP (and our) edification, can somene post links to the P's & C's you'd use to achieve the 3.5L pump gas motor?

I checked PP and didn't see anything.

[Bill Verburg]

As long as we are visiting fantasy land, here's where you can go when starting w/ a 3.6, again, the important thing here is the torque curves, hp is just a derivative of torque and rpm,



or

[Allan Kelsey]

Oh those clean engines with no heat and no A/C look so pretty!
...and when they make that kinda horsepower - LOOK OUT.

I have done some investigation to see where to find 100mm P&C and it looks like the upper cost range are made by Mahle and then everyone else seems to use a combination of JE pistons and QSC sleeves. I would be interested to know if anyone has recently used QSC pistons too??

Check them out here:Porsche 911 100mm Aluminum NIKSICA&reg Coated Cylinders & Pistons Set – QSCUSA

[ischmitz]

I'd look for a tired 3.6 and then rebuild it with slight modifications rather than paying top $$$ for a "gently used" engine and taking a risk.

Mine is a '92 964 and during the rebuild the only mods I decided to do were ARP rod bolts, slightly happier cams, and a chip. I got the heads and cylinders machined to accept fire rings to address potential leaking. It's been dry for 30,000 miles.





With the 993 headers and the air tube I got heat just like with the stock engine and this makes for an super reliable and drivable package in the early chassis. I guess I am slightly under the 300HP mark but it is plenty to get around town. My curb weight is around 2400 lbs with a full tank of gas.

If I need faster I would start thinking about loosing weight.

[Bill Verburg]

Good advice from Ingo

I'll add that w/ 915 i'd be leery of a brute motor, I wasn't at all happy w/ the stress the 3.8RS put on the 915 in my car, I could make the sides weep w/ heavy acceleration on the lower gears, a slightly warmed 3.6 seems to live much happier w/ the 915, I can still make it weep but not so easily