Interest in Bolt on Turbo kit?

[dpmcdonald]

Yeah, I was surprised too, and bummed. The clutch hasn't seen an easy life so maybe it's on it's way out. It was already in the car when I got it. Now I'm debating whether I go with a Spec clutch or go OEM M20 again.



But I don't mean to derail Jake's thread. My main point is that the car's a blast to drive at 8 psi. I can't wait to have it running at 12.

I'd put my money on going out..

[Ocell]

Yeah, I was surprised too, and bummed. The clutch hasn't seen an easy life so maybe it's on it's way out. It was already in the car when I got it. Now I'm debating whether I go with a Spec clutch or go OEM M20 again.

But I don't mean to derail Jake's thread. My main point is that the car's a blast to drive at 8 psi. I can't wait to have it running at 12.

[varg]

Yeah that's what I was thinking, on 10psi I'd expect 200-210whp, ITB equipped and stroker M20s make that. I know the stock M20 clutches can't take much but I figured they could take more than that.

[dpmcdonald]

He said it's an M20 clutch, that's why I said I wouldn't have seen it coming.

Doh! Missed that. Hmm. Yeah, seems like the M20 clutch should be able to handle 10psi plus and then some..

[varg]

He said it's an M20 clutch, that's why I said I wouldn't have seen it coming.

[dpmcdonald]

I'm assuming it was clutch slip. I floored it on the highway in 5th. When the boost built up the revs went up to 4K and held there for a second while I kept accelerating, then the RPM started climbing again.

Stock clutch?

[Ocell]

I'm assuming it was clutch slip. I floored it on the highway in 5th. When the boost built up the revs went up to 4K and held there for a second while I kept accelerating, then the RPM started climbing again.

[varg]

Wow, the clutch started slipping at only 10psi? Would not have seen that coming.

[Ocell]

Ocell, thanks for posting. Looks like a clean install. which fan did you end up using? Did you have any trouble installing the kit?

I'm using a Spal 15" puller wired up to the Aux fan circuit with an upgraded fuse. I put in the lower temp E36 temp switch, but it still doesn't fire the fan up until the temp gauge is uncomfortably high. Once it comes on, the engine cools down very quickly. Something I'm still trying to figure out.

The install wasn't quick for me, but this was also the first time I'd messed with forced induction so I was learning as I went. In the end it all went together very well, and I can't get over how clean and tidy the kit is.

I just got exhaust done Saturday, so I've only driven the car for a day and a half so far. The car is insanely fun to drive. I thought I'd be fine with my clutch, I've got the M20 flywheel and clutch, but it started slipping in 5th gear at 10psi. I've dialed it back to 8psi for now and I don't seem to have any slipping issues.

Here's a quick autocross run I did yesterday:

[ccsdo5]

I highly doubt it. I have seen a couple of cars making 300whp on stock internals in my searches, and it's my plan to do so as well, but I don't think the M42 can do anything more than that safely. Head studs and reducing compression ratio with a MLS head gasket are necessities. When I get my M20 swap stuff together I'll probably throw as much boost at the M42 as it will take and see what the outcome is, my turbo is capable of at least 350hp.

Well I'm sure interested in seeing what that little M42 can do before it quits on you. I've been having fun and my car has been pretty reliable with 7 psi on a stock engine with 150,000+ miles and unknown head gasket. I'm going to bump it up to 10 psi once I finish doing my five lug swap and redo my exhaust stuff. My friend gave me a hks wastegate for my T25 that opens at like 14.7 psi I think. I'll probably blow the head gasket with that but I guess I'll find out. If I do I'll get a MLS head gasket and some ARP studs for it.

[varg]

How does your AC work with no condenser fan on a hot day? My admittedly oversized intercooler is between the condenser and the radiator because it was impossible to fit under the valence without removing the condenser fan. I don't want to lose AC performance, this old system, with its inefficient tube and fin condenser needs all of the help it can get when running on R134, and I'm just picturing the high side pressures skyrocketing and the evaporator getting warmer at idle until it's barely cooling the air.

Has anyone made 400 whp on a stock boosted m42? Just got a 318is that needs some love and don't know which direction I want to go with it, I like the idea of something different though. The car already feels so light I don't really want to swap it as of right now.

I highly doubt it. I have seen a couple of cars making 300whp on stock internals in my searches, and it's my plan to do so as well, but I don't think the M42 can do anything more than that safely. Head studs and reducing compression ratio with a MLS head gasket are necessities. When I get my M20 swap stuff together I'll probably throw as much boost at the M42 as it will take and see what the outcome is, my turbo is capable of at least 350hp.

[ezman]

Also how's the result? Is it a blast to drive?

[ezman]

Ocell, thanks for posting. Looks like a clean install. which fan did you end up using? Did you have any trouble installing the kit?

[Ocell]

Just to add to the thread's gallery of finished installs, this is all done except for exhaust.


Finished M42 Turbo Engine Bay by Chris Owens, on Flickr


Finished M42 Turbo Engine Bay by Chris Owens, on Flickr


318is Turbo Install by Chris Owens, on Flickr

[dpmcdonald]

300 is doable but not really with a stock engine..... Going to need head studs and a VERY good tune at the very minimum.

FYI, I'm finally getting the standalone wired up. Going to put it on a dyno for some fine tuning and see how much boost I can safely throw at it on pump gas.

Will report back in a few weeks.