After thinking about all the engine options (ie. m20, m30, m50, s50, etc.) and all the money it would cost.... i recently came to one conclusion. Buy an M20 i engine.... spend some money to rebuild it... almost like new... chip it and be done with it, with the eventual option to turbo it without internals, and push about 8psi's. From this board i found out that 8psi's should give me a gain of about 80hp w/o internal work... that added to a nice 169hp of the stock i engine should keep me satisfied as long as i have my e30. But since i am currently running an e engine, i'm thinking why not rebuild that and turbo it running higher boost. Anyway... dont know what i'm really asking... haha. I guess your opinions on the matter. How much boost can i run safely without doing internals? And how much horse can i get out of my e after a turbo. I dont want to mess with internals at all. Dont wnat to get into a monthly payment of fixing my car. Oh and one last question. Once you turbo a car, what kind of copmuter work do you have to do? And what about tranny options on my e after a turbo? Ok i'm done... thanks guys. Dave
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Turbo question of my own....
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I dynoed 276 HP and 300 lb trq at 7.5psi. stock internals. and PSI is not plural. pounds per square inch. pet peive of mine sorry.. as for tranny, it will hold up fine. computer wise, as long as you intercool it, add bigger injectors, and put in a rising rate fuel presure regulator, you don't need to use any aftermarket computers.
TCD has 15psi(I think) going into his stock internals.
Buy maximum boost, it is a good read.
-peter
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Originally posted by PeterCip...... and PSI is not plural. pounds per square inch. pet peive of mine sorry......E30 Dinan Turbo
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Yeah, I have an '88 is. I'm planning on rebuilding the engine some day, or just getting a new one. So, with these turbos... I see kits online. Anybody know where I can get one for under 4k?Me: "I can't wait to redline my car!"
Mark: "Didn't you just break a rocker arm?"
Me: "Yeah, I don't think I've learned my lesson."
Mark: "You never will."
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Originally posted by llll1l1llKick ass. To build my own, I just get the turbo, injectors, fuel pressure, chip, etc. Right?
As far as it being a waste of time... that was kinda my question in the begining and all along. But wouldn't a new or custom computer fix the revs issue. Isnt' that what really determines all of that stuff... the computer? Anyway... anyone out there that knows about turbos please post some details.E30 Dinan Turbo
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Originally posted by llll1l1llYeah, really, I need to know more about turbos...Me: "I can't wait to redline my car!"
Mark: "Didn't you just break a rocker arm?"
Me: "Yeah, I don't think I've learned my lesson."
Mark: "You never will."
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Not sure about some of the turbo questions, I would like to know some of those answers also. But the revs can be changed with the computer although the e head wasn't made to rev, you have to get the double valve springs or you will get valve float and damage stuff. The other thing is you need to switch cams because the stock e cams are not very good past 5300, I think to switch cams you need to drill two oil journals (or maybe that is only for using the i cam).
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It takes a bit more than that guys. I have an 88 325is turbo.
here is a list of the stuff I needed, besides months and months of research.
Turbo--> turbnetics T3 super 60w/internal wastegate..
Manifold
Silicone connectors
boost piping
Injectors
AFPR
blowoff valve
Intercooler
Downpipe and custom exhaust
Muffler
gauges
NO CHIP
water injection(optional)
Clutch
gaskets
headbolts
various eninge parts, wires, waterpump, etc.
megasquirt(optional)
random fasteners
I can't think of anything else...but i am sure there is more
-pete
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For an eta and boost you want to at least put an m20b25 head and have the advantage of the bigger runners, cam and accessories. A 2.7i or 2.8i is the best candidate for boost. CR is just perfect for FI on these hybrids. You don't neccesarily have to change the internals...its optional. There are other ways to control detonation.
Dinan did this back in the day and got 302hp,356ftlb & a 0-60 of 4.9secs using different rods an IHI turbo and few other different bits. Granted its Dinan a number or two might be off but its still waaay powerful and more than double the stock perf. numbers
Here's a link to teh full article on ETA power :twisted: http://www.sterling-carcare.com/Perf.../dinan-m3.html
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