Anyone turbo an M20B27

[sayed ali]

Even a good low boost m20 (like 10-12 psi max) will be much more powerful than doing a stock M50 swap, even S50!

[BMWZ318is]

im running a 325e block with a 325i head war chip tuned t3/t4 ebay turbo arp head studs and 15lbs of boost i had an e head on it originally drilled out to fit a i turbo cam it was ok but do the swap its much better.

[BMWZ318is]

To answer your question yes people turbo a b27 e30tech.com has mass amount of information about forced induction indetail from what turbo, exhaust, intercooler, to how to reinforce the block and I recomend that if you haven't already you should start there. When turbochargin a m20b27 it is most common to put a I head on the E block. This combo gives you more displacemeant (2.8L) and lower compression which is ideal for FI. The M20 is a strong engine and most parts will be able to handle a lot of horsepower. Your concerns are the head gasket and water chanels. It is common to weld and redrill the water chanels (so that the gasket dosent get pushed into them) and o ring the head or the block. This would suficiently strengthen your engine but like I said I'm no expert and I would go do your research at e30tech.com

I agree with this

[Cyrix2k]

what did you use o turbo your m20..new to the whole turboing a car
do i need to buy a turbo kit or can i buy turbo headers a turbo then a oil feed pipe oil drain pipe boost gauge ..i dontthink i need a inner cooler right? since you didnt need it???

My setup:

325i VR sensor, crank wheel, and sensor bracket
MS2/extra ECU
GM "two tower" style coils
666 fab (Jon Volk) turbo adapter
Garrett T3 turbo from a Volvo 240, internally wastegated with a 6 psi spring
2.5" Ebay charge piping kit
ebay BOV from wyntonm
Custom downpipe
325i FPR (3 bar)
ebay oil feed & drain kit
ebay oil sandwich adapter for the oil feed
Innovate LC-1 wideband o2 sensor, controller, and display (I now recommend the AEM UEGO instead)

I later added a volvo 240 intercooler, but it's not needed. You'll gain a little power but also add lag. No fuel injectors are needed at 6 psi, but they are really close to being held full open. You can either piece together the system yourself or buy a kit. If you do this yourself, I suggest doing a lot of reading.

And yes, at 6 psi, a 325e turbo is faster than an m50 swap but it drives a LOT different.

[euro760]

Alright thanks man I appreciate the info
Really want to turbo my 325e and later put a I head in it
Around how much was it to to turbo for your 325 e if you don't mind me asking

[Cyrix2k]

I don't know... I try not to add all that stuff up :p Maybe around 1400 after misc parts?

[euro760]

Alright thanks a lot

[iXe<30]

what gas milage are you getting now compared to before adding the snail cyrix2k?

[Cyrix2k]

what gas milage are you getting now compared to before adding the snail cyrix2k?

no idea, I stopped tracking the fuel mileage after adding the turbo. My driving style changed a lot too so even if I did have numbers, it wouldn't be a good comparison. The mileage should still be good just cruising down the road in theory. I now have an m50, also boosted, so I can't pull data points on the m20 and the m50 was never NA in this car.

[iXe<30]

no idea, I stopped tracking the fuel mileage after adding the turbo. My driving style changed a lot too so even if I did have numbers, it wouldn't be a good comparison. The mileage should still be good just cruising down the road in theory. I now have an m50, also boosted, so I can't pull data points on the m20 and the m50 was never NA in this car.

damn, ive always been so curious about it...

[euro2fast4u]

this thread makes me laugh.

can we discuss how adding an 885 head increases the displacement by .1L?