M20 turbo vs m50 turbo ? Help on a few things ???

[shane281189]

Hi I currently have a m20 2.5 turbo running oN mega squirt t3/4 turbo just updated fuel pump and a few other part after having fuel delivery problems on the rolling road . I take it back in a few weeks but he reckons it will only run 270bhp which I was a little disappointed with . I'm no expert on cars/ engines but after reading other forums it looked like 300bhp was easily achievable ??

Second quiry is that I'm not sure what was done to strengthen this engine when I brought it so next year was thinking about rebuilding the engine or upgrading ... Either a 2.7 alpina engine ? Finding it hard to source one , any idea where I could get one or e36 325i but would I be able to use my turbo assembly on a e36 I know manifolds etc are different . Is there a big difference between the engines that is worth me doing a swap ? Any help would be great .

[ross2009]

why does he think it will only run 270 bhp ??

[Gunni]

You won´t need to do anything to your engine, just keep boosting

[shane281189]

I have no idea , after reading threads on here 300 bhp seemed achievable ? Mabye he thinks it can't handle it ....

[ross2009]

well he's wrong on both accounts they can handle it
if you don't know the history of the engine you need to make sure it's got updates head bolts or arps and the injectors to cope other than that there's no reason why it wouldn't make well over 300 bhp

[shane281189]

Well my problem at the moment is its running lean I checked today that the fuel pump has been up rated and on the fuel pressure regulator it's saying 2.8 bar is that enough pressure ? The injector have ment to be updated how could I check to find if there the right one or right size ? The bloke at the dyno place said to uprate the fuel pump so I've just brought a walbro 255 high pressure pump but don't want to fit it if there's something I'm missing ... Help mee

[HairyScreech]

Stock injectors are at 3.5 bar iirc.
Your injectors should have some part numbers near the plugs, may be hard to read but only way to be sure.

[ross2009]

2.8 isn't too bad the stock fuel pressure regulated runs at 3 bar, what color are your injectors ? might give some other indication
you can always still fit the pump it won't hurt

[shane281189]

Only thing is if it ain't the pump and fit it I can't send it back lol mabye the pump has had it's day ..... Il look tonight to check I did get told they were off a saab .. But il confirm. What would be the ones to get if there not the ones where can I get them ?

[ross2009]

if there the Saab ones they will prob be 32lbs redtops I'd go 42lbs if I was you then you've got room to go up you can get them pretty much anywhere
I got mine from the states over here there about 50 quid each maybe cheaper

http://www.e30zone.net/modules.php?name ... c&t=171098

[b12rlw]

http://www.ctsturbo.com/cart/catalog/Hi ... -20-1.html
Try here too. Very cheap prices and they'll "gift" you them.