Turbo question of my own....

[bimma360]

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

[PeterCip]

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

[bimma360]

...... and PSI is not plural. pounds per square inch. pet peive of mine sorry......

HAHA... stupid me, and i'm an engineer major too. Oh man! Thanks for the info. So i guess i'll do just that.... rebuild my e and turbo it. Kinda surprised at the 276hp at only 7.5psi. And thats on an e engine right? Also a very very dumb question..... since my car redlines at ummmm.... 5000rpm. I'm kinda confused how all that will work without doing computer stuff. And at the same time.... after i turbo what kind of gauges do i put in?

[PatNy]

good question.....i have an eta also i wanna go FI soo bad.....my question is that since our eta engines redline at 5300 with the jc chip if we stroked the engine like to a 2.9 would our redline move....also we would put down alot more power then sticking with the stock eta engine......

[llll1l1ll]

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?

[bimma360]

build your own thats what i'm doin.....

[UNHCLL]

Turboing a stock eta engine will be a waste I think. You wont get enough rev's to spool up a turbo producing enough boost like you wish.

But I'm not a turbo expert. Just a thought.

Chris

[llll1l1ll]

Kick ass. To build my own, I just get the turbo, injectors, fuel pressure, chip, etc. Right?

[bimma360]

Kick ass. To build my own, I just get the turbo, injectors, fuel pressure, chip, etc. Right?

Not sure abot all the details i'm far from doin something like this.... haha. But i know its a lot cheaper to do it yourself.

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.

[llll1l1ll]

Yeah, really, I need to know more about turbos...

[llll1l1ll]

Yeah, really, I need to know more about turbos...

One more thing... Wouldn't I need a lot of new internals before upgrading to a turbo?

[cheades]

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).

[PeterCip]

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

[bimma360]

Ok screw it.... haha. If i have to do internals to an eta to make it handle higher revs, then i'm not turboing it. So back to plan A.... drop an i engine, rebuild it, chip it, and be done with it. Anyway, i need to first do a suspension and cosmetics.

[e9nine]

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