250 hp 325is

[greateratlanta]

I agree with you 100%, I was just trying to show how much it would take keeping it in NA form to try and come close. For the amount of money you would spend and the gains you get, FI is defiantely the way to go with the m20. As we all know, the 2V head is the major limitation for these motors.

-Clayton

[NWMF]

I agree with you 100%, I was just trying to show how much it would take keeping it in NA form to try and come close. For the amount of money you would spend and the gains you get, FI is defiantely the way to go with the m20. As we all know, the 2V head is the major limitation for these motors.

-Clayton

its 105 outside so i want to keep my AC so i think the turbo is a best alternative. so do you guy think i should get new pistons and rings. since i have the block out and the tranny how about a light flywheel. the pistons look real new and doesnt seem to be much wear on the engine parts. what can i do to make 8 to 12 of boost reliable.

[rwh11385]

so do you guy think i should get new pistons and rings. since i have the block out and the tranny how about a light flywheel. the pistons look real new and doesnt seem to be much wear on the engine parts. what can i do to make 8 to 12 of boost reliable.

Maybe go for a LTW flywheel, but i'd rather save $ for tuning....$ for parts.
Do a search for a member's posts TCD, he ran 12....13....up to 15psi I think on a stock motor, no problems. My advice would be you don't have to mess with pistons, but do what makes you feel more confident. Maybe redo all seals, rings, etc that might leak.

[KenC]

PM Matt325is

[NWMF]

thanks so much for all the help guy its real helpfull

[rwh11385]

PM Matt325is

someone seriously needs to get some footage of his car in action again.

[mmagnusson]

turbo m20

As some of the other guys have said turbo the m20 works wonderfully assuming your engine is in decent shape. You might want to do a compression test and leak down test and figure the amount of oil consumed over 3,000 miles and then make your decision. The m20 (is) bottom end is very stought and 8.8:1 compression is perfect for turbocharging. The tcd turbocharger system is a very well thougt out system and should function well with good expert advice and service from the guys at tcd. My turbo system I made is very very similar to theirs and I've been running 7.5 psi of boost on a 250,0000 mile motor for over a year and a half with great success. No fancy smancy engine managment except for a J&S safeguard and injectors from tcd and runs neck and neck with my buddies e46 m3. Keep in mind the oil is changed every 2,000 miles, the plugs once a year and the valves adjusted every 15,000 miles. It helps when you have worked for bmw and are kind of anal about maintenance! My system was a big learning experience with all kinds of time and effort involved, the tcd system may seem pricey till you factor in all the parts, labor, and research involved and then its about the same as if you build a top notch system yourself with all the screw ups and glitches never happening. I'm a bmw tech from Knoxville and am no way affiliated with tcd, so my perspective should be fair.

[nando]

how much is the TCD non intercooled kit? I'd prefer an N/A swap, but that'd probably cost as much with an ix as a full turbo M20.

[808BMW]

Stage I – Non Intercooled $3875
Stage II – Intercooled $5125

[NWMF]

does anyone know the brand of the TCD turbo is?were does he get them???
is there any good write-ups on how a turbo system works just a little self education.

[rwh11385]

how much is the TCD non intercooled kit? I'd prefer an N/A swap, but that'd probably cost as much with an ix as a full turbo M20.

Sure, you prefer that, but it'd cost more for less HP most likely.

The turbo is great for the 325i, with the CR right, and the low list of other shit that needs to be done. I.e. injectors, manifold, turbo. Not engine, swap peices, then exhaust, chip, all that jazz.

[EVOIIIM3]

250hp can be done with a M20, 250whp maybe, but the engine will not last long, and will have a very narrow power band.

Everything needs to work as a unit! This is the most important thing. If you start at the intake, and follow it threw to the exhaust, you will get there.

Of course FI might be cheaper, until you rebuild the engine.

IMHO, your best bet is do do a M50/S50 conversion this has the most bang for the buck.

If you want to keep the M20, it will cost, but you can get very reliable HP.
First thing, stand alone ECU, with a A/N, Map, or MAF for air metering, open up the TB, plenum, and head, install big valves, and cam, get reinforced rockers, TI valve hardware, double springs, adjustable cam sprocket, header, higher compression pistons, 2.7-3.0l kit. Light weight rods, balance everything, including injectors.

Adding a dry sump would help and be cool. I bet you can build it and tune it for around $8-12k

Matts car is a ROCKET ship, but he has had a HARD time getting it that way, there was a LOT of speed bumps along the way. Right now, he still can not get that power to the ground! He needs 9in rear wheels!

[Chris E30 Cab]

The most I've seen from a 3.0L stroker is Calvin Tan's 207rwhp (242HP) & 203rwtq (237ft-lbs)......which is alot of power in my book, and plenty to have a very enjoyable E30 for daily & track use. This is not even a full race engine and does not have a Dbilas multi-TB.....yet. It would certainly cost you appx 4-7k depending on how much work you do yourself and where you live.

Turbo's can give much more power, but that's if you like forced induction.

There is simply no inexpensive way to get big gains on the M20B25 engine.

Good luck!

[mmagnusson]

turbo

I think that the turbo that comes with the tcd kit is a t4 from innovative turbo, and they have also used atp manufacturing for other peices of their system, both are good companies. atp manufacturing at vwturbo.com or innovative turbo systems

I'm using a modified 944 turbo intercooler and it works great

[Xmarksthespot21]

does anyone know the brand of the TCD turbo is?were does he get them???
is there any good write-ups on how a turbo system works just a little self education.

I have some info about turboing the m20 from when I was going down the path. Just pm me and I'll share it with you.