250 hp 325is

[NWMF]

I friend of mine sells e30 parts on ebay and he was tired of shiping blocks and trannys . So he gave a 325 block and the tranny. The clutch look real new and the engine doent even look worn. like it has been rebuilt and its like someone did a real good job. Needless to say the car was totaled due to some suspension damage the car came from to us from Kansas. But my question is how can I get to 250 hp reliably. what are my option to get this to the wheels? And how about getting a light weight flywheel? Does and e30 come with a light flywheel?? I want to build this engine right . thanks

[KenC]

250 to the rear wheels? FI.

[CobraKai]

250 to the rear wheels? FI.

[nando]

the only way you'll hit 250hp with an M20 is forced induction, or perhaps a wild race spec motor, but you'd have to spend many thousands of dollars (on an M20, not worth it). fortunately, forced induction does work quite well with the stock M20, and could easily be tuned professionally to 250+hp. otherwise, you'd be better off swapping in a stock E36 m3 motor that makes 240hp stock.

[NWMF]

the only way you'll hit 250hp with an M20 is forced induction, or perhaps a wild race spec motor, but you'd have to spend many thousands of dollars (on an M20, not worth it). fortunately, forced induction does work quite well with the stock M20, and could easily be tuned professionally to 250+hp. otherwise, you'd be better off swapping in a stock E36 m3 motor that makes 240hp stock.

if i put a turbo in will i have many problems?how much boost will i have to run? plus isnt the compression to high?

[CobraKai]

the only way you'll hit 250hp with an M20 is forced induction, or perhaps a wild race spec motor, but you'd have to spend many thousands of dollars (on an M20, not worth it). fortunately, forced induction does work quite well with the stock M20, and could easily be tuned professionally to 250+hp. otherwise, you'd be better off swapping in a stock E36 m3 motor that makes 240hp stock.

if i put a turbo in will i have many problems?how much boost will i have to run? plus isnt the compression to high?

Brandon (revo86) is running a turbo S50 in his 325 and he was making like 360 to the crank at like 8psi...he blew a gasket i think and is getting the engine re-built and is going to be pushing like 420hp to the rear wheels...No idea how much boost hes going to run though.

But if you do a N/A on a S50 you can prolly get 250...Talk to the Mchenry boys about that. :)

[NWMF]

what are some of the problems people run into turboing an m20 IS motor

[Digitalwave]

the only way you'll hit 250hp with an M20 is forced induction, or perhaps a wild race spec motor, but you'd have to spend many thousands of dollars (on an M20, not worth it). fortunately, forced induction does work quite well with the stock M20, and could easily be tuned professionally to 250+hp. otherwise, you'd be better off swapping in a stock E36 m3 motor that makes 240hp stock.

if i put a turbo in will i have many problems?how much boost will i have to run? plus isnt the compression to high?

Brandon (revo86) is running a turbo S50 in his 325 and he was making like 360 to the crank at like 8psi...he blew a gasket i think and is getting the engine re-built and is going to be pushing like 420hp to the rear wheels...No idea how much boost hes going to run though.

But if you do a N/A on a S50 you can prolly get 250...Talk to the Mchenry boys about that. :)

He is talking about M20's... S50's already have 240 NA stock. And Brandon was closer to 400 crank HP with 5psi.

[Jon325i]

what are some of the problems people run into turboing an m20 IS motor

Well if your motor is tired or poorly maintained then you could run into some reliability issues since a turbo system adds a greater amount of stress on many of the components. I would only consider going with the turbo option if your motor meets the following criteria:

1) its a strong/solid motor with no known mechanical issues...the lower the mileage the better. Its got to have good compression readings on all cylinders and free of any oil/coolant/gasket/vacuum leaks.

2) installing a turbo charger is smog legal in your region. I live in Calif. and doing a turbo M20 for a street car is completely out of the question for me. The last thing you want to do is spend a fat wad building up a performance M20 only to find out its going to be a headache/impossible to pass smog.

If you use the search feature, enter "turbo" or "turbo M20" or other similar phrases and you should be able to get a good amount of information about this upgrade. There are a few people on here who have done this with great results. All you have to do is some digging.

Jon

[NWMF]

what are some of the problems people run into turboing an m20 IS motor

Well if your motor is tired or poorly maintained then you could run into some reliability issues since a turbo system adds a greater amount of stress on many of the components. I would only consider going with the turbo option if your motor meets the following criteria:

1) its a strong/solid motor with no known mechanical issues...the lower the mileage the better. Its got to have good compression readings on all cylinders and free of any oil/coolant/gasket/vacuum leaks.

2) installing a turbo charger is smog legal in your region. I live in Calif. and doing a turbo M20 for a street car is completely out of the question for me. The last thing you want to do is spend a fat wad building up a performance M20 only to find out its going to be a headache/impossible to pass smog.

If you use the search feature, enter "turbo" or "turbo M20" or other similar phrases and you should be able to get a good amount of information about this upgrade. There are a few people on here who have done this with great results. All you have to do is some digging.

Jon

good to know. i think i will is their anyone who sells turbo systems for the m20

[Jon325i]

A gentleman by the name of Todd posts here occasionally. He sells what appears to be some quality looking kits, albeit at a price. But hey, you get what you pay for...right?

http://www.turbochargingdynamics.com

Jon

[Wes325]

If you have some sense of a clue to what you are doing then piece a turbo kit togeather yourself with an aftermarket engine management system. It would save you money.
________
silver surfer reviews

[CobraKai]

the only way you'll hit 250hp with an M20 is forced induction, or perhaps a wild race spec motor, but you'd have to spend many thousands of dollars (on an M20, not worth it). fortunately, forced induction does work quite well with the stock M20, and could easily be tuned professionally to 250+hp. otherwise, you'd be better off swapping in a stock E36 m3 motor that makes 240hp stock.

if i put a turbo in will i have many problems?how much boost will i have to run? plus isnt the compression to high?

Brandon (revo86) is running a turbo S50 in his 325 and he was making like 360 to the crank at like 8psi...he blew a gasket i think and is getting the engine re-built and is going to be pushing like 420hp to the rear wheels...No idea how much boost hes going to run though.

But if you do a N/A on a S50 you can prolly get 250...Talk to the Mchenry boys about that. :)

He is talking about M20's... S50's already have 240 NA stock. And Brandon was closer to 400 crank HP with 5psi.

oops. :o :)

[greateratlanta]

TCD makes one of the cheaper more reliable kits. You could save some money and build one from scratch, but it is very time consuming and full of headaches. You would end up spending tons to make a NA m20 that will probably fall short of 250 rwhp and most likely not streetable. Just and idea off the top of my head would be a 3.0L stroker, port and polished head, multithrottle intake (extrude honed if not already done), SS MAF, larger exhaust valves, larger injectors, adjustable fuel pressure regulator, extreme cam (302), header and track pipe, fan delete, and AC delete.

-Clayton

[nando]

Just and idea off the top of my head would be a 3.0L stroker, port and polished head, multithrottle intake (extrude honed if not already done), SS MAF, larger exhaust valves, larger injectors, adjustable fuel pressure regulator, extreme cam (302), header and track pipe, fan delete, and AC delete.

the problem is, all that *might* give you 200rwhp, but you'd have a ton of torque.. I'd go forced induction if you want to build an M20.