Author Topic: M42 turbo (Read 53338 times)

Kermit · « **Reply #45 on:** August 12, 2012, 06:12:36 AM »

can u upload more videos how your car is running ?

fumstoo · « **Reply #46 on:** August 13, 2012, 05:15:37 PM »

Sure can

ill try and get one up tonight

Kermit · « **Reply #47 on:** August 14, 2012, 05:30:32 AM »

great

fumstoo · « **Reply #48 on:** August 19, 2012, 01:56:34 AM »

tranny pooped. Is it possible that the difference in angle could have caused an issue with the oiling? Or bad tranny in the first place?

CBS318 · « **Reply #49 on:** September 06, 2012, 01:45:49 AM »

So you started with a m42 engine and added a turbo kit and so far have 200 hp so you can make a e30 318 i nice lightweight fast car

romkasponka · « **Reply #50 on:** September 06, 2012, 04:16:29 AM »

If you want gearbox to last longer you should get gearbox from diesel car, like 320d. In that case you will need different clutch disc (different splines). They also can be 6 spd....

wazzu70 · « **Reply #51 on:** September 06, 2012, 02:07:21 PM »

Use a ZF trans from a 96+ e36

fumstoo · « **Reply #52 on:** November 17, 2012, 12:32:03 PM »

Driveshaft cost me $400. Ill be sticking with the g260 for awhile longer :p

So, today is my final day in NYC. ill be back in Wy tomorrow so the 2764038WHP m42 is back in bidness. Tranny and guibo are first. I want to do something about my linkage as well. Its too sloppy for my liking. 2.73LSD after that. Ive sent an email to MM about their 35mm heavy duty lifters and turbo cams. Also considering VAC cams but i have yet to send them an email. Can anyone school me on turbo cams?

? Also, i think ive changed my mind about the final turbo. Thinking maybe a hx35 or a hx55. still have lots of reading, and time, before i make a purchase so any input would be appreciated!

Oh, and i have an LC-1 if anyone wants it

wazzu70 · « **Reply #53 on:** November 29, 2012, 12:40:35 PM »

I keep losing my posts! ARG.

Ideal turbo for these engines is the EFR 6258. Same turbos used in Indycar. Response and power potential are unmatched for its size. Its a reasonable cost too.

If for some reason you dont want to run that a GT2871R is your best bet.

The Holset is gigantic and incredibly heavy. I was planning on using one and I sold it for that reason.

What are your power goals? Thats necessary to recommend a turbo accurately.

wazzu70 · « **Reply #54 on:** November 29, 2012, 12:59:05 PM »

For the cams, both MM and VAC have good offerings. VAC imports Catcams cams which are excellent. Their webpage http://www.catcams.be has good info on cam specs.

Many people think stock cams are best for a turbo, which is not true with modern turbine wheel aero. There is a lot of gain to be had in spool time and response from cams.

In general you want an exhaust cam with lower lift and duration than the intake and fairly similar to stock. For the intake you want a higher lift cam with higher duration, aggressive ramp, and advanced lobe centerline (widens you LSA).

The theory works the same as an atmospheric engine. Earlier opening intake valve gives you earlier cyl fill and generates more torque down low. The negative is torque drops off up high (you shift the tq curve left). With a turbo generating airflow you dont have the same problem as higher RPMs are where the turbo is working and air intake does not drop off. Win-win.

Thats the short answer anyway. Post questions here and I will do what I can to answer.

fumstoo · « **Reply #55 on:** December 01, 2012, 01:35:30 PM »

i like you wazzu.

power goal is around 450whp

Im looking at this efr 6258. im externally wastegated and i cant find if i can get it without the wastegate. Do you know if that possible or is that a question for borgwarner? I did on removing it but all that came up was honda forums with people welding them open and im not sure if i want to go that route.

your cam explanation makes perfect sense. i cant get on the catcams site though.. ill have to get ie soon.

Either way, the cars being put on hold again...

wazzu70 · « **Reply #56 on:** December 02, 2012, 02:35:42 PM »

Just trying to help out

The 6258 is only available with IWG for now. Rumor says other housings are on the way. Treadstone is making some V-band housings too.

fumstoo · « **Reply #57 on:** December 04, 2012, 11:38:49 PM »

So i was thinking today and would advancing the intake cam a few degrees have a similar affect as a turbo cam?

wazzu70 · « **Reply #58 on:** December 07, 2012, 12:12:29 PM »

If you dont want to spend $600 on turbo cams degreeing the factory setup is a good alternative.

I would advance the intake 3-4deg and retard the exhaust 1-2deg as a guess.

fumstoo · « **Reply #59 on:** January 02, 2013, 08:31:54 PM »

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