3.2l rebuild, the quest for more power

[michael lang]

Originally Posted by 0396

are you expecting 345 hp just by utilizing a 964 cam and SSI?

No, not even close. I'd consider myself lucky to be just close to 250bhp after a chip had been put in. I'm waiting on the chip because I want to see how the changes I've made affect how my engine behaves so I know what to the tuner when he asks me how I want my engine to perform.

Where did you get 345bhp from? I have never had that expectation.

[0396]

Sorry as I simply misread your posting at 2am.
I should get some sleep -

[impactbumper]

congrats

[crashmy911]

250 at wheels?

[scarceller]

I don't think you'll get 250 WHP without upping displacement to 3.4L and making some intake changes as well cams.

[michael lang]

No I was figuring at the crank but as I said previously, this would be after a chip in the ECU. I really wanted to have a dyno completed before going in the car to see how the changes made changed the output level in my engine but I could not find anyone here in Washington D.C. that had the ability to bench dyno my engine. There were plenty that could do it with the engine in the car though. It's not the end of the world and it certainly doesn't guarantee me a win at my next DE so if I can stay closer to the 996 guys... mission accomplished.
I did stop on the way home from the beach two weeks ago, I saw and heard it run. It sounds very angry!

[scarceller]

250HP at the crank is about 218HP at the wheels you should be able to hit that number with just minor mods, like exhaust and a chip. I have a 3.2L Euro with this setup:
3.2L Euro Pistons and Cyls
Web Cams 20/21
SSIs with M&K 2in2out exhaust
Extrude honed and flowed intake
Bored Throttle Body
My custom MAF setup and my custom chip that matches.
Runs 93 octane fuel

I repeatedly pull 228-232HP at the wheels with this setup on a dynojet.

I've also helped tune a few 3.4L and 3.5L engines that have pulled in the 250HP at the wheels range, but these motors are not cheap and a lot of mods went into them.

You can see 2 of these here:
My '87 3.4 with MAF project

1985 3.4 build using MAF 279.56 HP, 237.63 RWHP

The 2nd twin plugged engine will be getting more aggressive cams this Winter as we feel that motor will do better with slightly more aggressive cams.

Originally Posted by michael lang

No I was figuring at the crank but as I said previously, this would be after a chip in the ECU. I really wanted to have a dyno completed before going in the car to see how the changes made changed the output level in my engine but I could not find anyone here in Washington D.C. that had the ability to bench dyno my engine. There were plenty that could do it with the engine in the car though. It's not the end of the world and it certainly doesn't guarantee me a win at my next DE so if I can stay closer to the 996 guys... mission accomplished.
I did stop on the way home from the beach two weeks ago, I saw and heard it run. It sounds very angry!

[michael lang]

I had considered sending the intake manifold for extrude honing, in the end, decided against it with the theory that the effort/expense wasn't justifying the gain it would have given. Plus, one of the things that I enjoy most about my car is how bulletproof it has been. I once went through a period of 13 track events without having to open the tool bag during that weekend. The only tool I had to use was the tire pressure gauge and the torque wrench on the lug bolts. I've been to many DE's where guys with really nice tricked out track beasts spent their entire weekend on their backs in the paddock fixing something so when I was planning my build I tried to find a nice balance between squeezing a little more juice out of the engine and maintaining that rock solid reliability. I chose the path that I did because I thought it was the best route. With the things that I have done and adding a chip in the M.E. I'm at 220-225bhp at the wheels I will be thrilled. I tried to post a short 11sec video of my engine running but could not get it load...sorry.

[scarceller]

Mike,

You have not altered that motor significantly so I recommend you put in the stock chip and dyno it with that chip. Then put in the performance chip and dyno again, try doing this on the same day with same conditions if possible. Then overlay the best runs from stock vs perf and compare torque curves across the RPM range. Do pulls from 2500 to RedLine RPM.

I suggest this so you know exactly what the gains of the perf chip are.

Ask the dyno operator if they can log intake vacuum during the run, I also log exhaust pressure if possible but intake vacuum in my opinion is a MUST. You want to see RPM, Torque, HP, AFR and Intake Vacuum.

[michael lang]

Yesterday was a really special day for me, it was a day that I have been dreaming about for the last two and a half years since I had last driven my car. Yesterday was the day that my car was finally ready for me to pick up.

Loaded up and ready to make the drive back from Richmond. Just in time too since a lot of the roads were closing for the bike race through the city.



I hate driving on I95, traffic always sucks on the section between Fredericksburg and Springfield no matter what time of the year you are on it or which direction you're going. It's really sad when you're heading south at 4:30am on a Saturday and you're at a standstill because it's bumper to bumper.
Anyway, yesterday was also the first time I've driven my car in two and a half years and what I was looking forward to most was seeing how the engine felt since I did the top end. Holy crap!! The sound is amazing, and when the cams come on at 5000rpms the car pulls like crazy. There's a sudden thrust of acceleration that is
very similar to when the powerband on a two stroke engine kicks in. It's quite the rush and I better be careful or it's going to get me in trouble. When I get the engine broken in and after I do the first valve adjustment, I'll take the car to have some dyno runs and see where the numbers ended up. What I'm really looking forward to is seeing what the torque number ended up being.
Back at home where it belongs...my garage.

.

[DSPTurtle]

Congratulations!

[scarceller]

Nice to be back behind the wheel.
Enjoy!

[Cairo94507]

Nice. I look forward to seeing the dyno numbers. I have an '89 3.2 going into my Six. Rebuilt, 964 cams with SW chip and using my original '71 heat exchangers with a 2 in 1 out stock muffler. Should be plenty of power for a 2,200 pound 914.

[Luccia at Pelican Parts]

Great thread. Congratulations and I bet that first drive after so long was exhilarating.