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Old 12-02-2002, 11:00 PM   #1
chromius
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Question Turbo Kit E30 325e

Does Anyone have any experiecnce with fitting a Turbo Kit, or a supercharger on an E30 325 with an eta engine. Not sure if it could work, cuz I think the 325 has a higher compression ratio then the 325i witch probably wouldn't lend itself well to forced induction, but if anyone has any ideas, any help would be appreciated. Thanks.
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Old 12-02-2002, 11:07 PM   #2
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It can be done, even to an ETA...it can take 8psi on a stock engine. But if you put an "i" head you will get a much lower compression, even lower then the original "i" engine, so you can run higher boost! I hear its possible to get 260hp from the 2.7 only with a turbo (at 8psi) but it sounds a bit high to me...
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Old 12-03-2002, 08:03 AM   #3
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What compression does the eta block/ i head hybrid have?
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Old 12-03-2002, 10:30 AM   #4
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Quote:
Originally posted by robert79
What compression does the eta block/ i head hybrid have?
From what I remember it was 8.1:1 ( if you dont change pistons).
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Old 12-03-2002, 01:18 PM   #5
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there a supercharged kit i have seen somewhere ( sorry dont remember) for a strock eta a make 243 pound of torque and 180hp... at 260 hp the torque must increase near 300 pound the eta his way more torquy than high rev...

Must be crazy! But a got a question the Eta engine his a strong engine but a stock compression with a boost will surely destroy the engine really fast?
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Old 12-03-2002, 04:25 PM   #6
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Quote:
Originally posted by Sylak
there a supercharged kit i have seen somewhere ( sorry dont remember) for a strock eta a make 243 pound of torque and 180hp... at 260 hp the torque must increase near 300 pound the eta his way more torquy than high rev...

Must be crazy! But a got a question the Eta engine his a strong engine but a stock compression with a boost will surely destroy the engine really fast?
Those numbers seem high to me too. And the ETA has a weak crank so it isn't a strong stock engine to apply boost to.

Turbos (custom or kit) are posible but take alot of tuning and dyno time. People think that it is just a bolt on....it isn't. That is the big mistake with forced induction and if it isn't set up properly then KABOOM!
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Old 12-03-2002, 06:19 PM   #7
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Yeah i know about that.. FI isnt easy to do. and it's more hard on a N/a engine!
Personally i'll go with a Swap ( M50 maybe) it more safe and my engine his now over 200 000km so a boost on a old engine.. doudtful
anyway for now i'm just dreaming i dont got money anyway!
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Old 12-03-2002, 08:33 PM   #8
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How about 325e M20 engine with the 325i M20 head and the 324td M21 crank?

Hmm, what kinda compression would the M21 engine get with the 325i head?? It would need a new set of pistons and the blolck would to be bored out from 80 to 84.
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Old 12-03-2002, 08:56 PM   #9
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So If it can be done, what would the effect be on engine components? Tie rods, Bushings, Piston Rings...etc and even Driveline components, Diferential and tranny?
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Old 12-03-2002, 09:27 PM   #10
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To slap a turbo on the old M20 engine is going to give you good gains but heat is the main issue and cracking heads will probably be the main culprit. Why? Inline six engines have problems cooling down the center 2 pistons vs. a V6 or V8 where the pistons are seperated. I'm not totaly knocking down the M20, but it is going to cost lost of money on any engine for a proper installation/dyno tuning time.

Now to build a proper turbo motor you have to spend some serious cash (about $15,000+ on a M50 engine). I still want to research the possiblities of a reliable turbo M50 for future "projects".

Check out this movie of the Veilside Nissan Skyline GT-R that puts out 1017hp at the wheels (Ahem! Skylines are AWD!!!). But I guarantee that engine has to be rebuilt after HOURS of driving...not weeks, months or years.

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Old 12-03-2002, 09:41 PM   #11
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I have a prime example to the wrong setup..

Quote:
Turbos (custom or kit) are posible but take alot of tuning and dyno time. People think that it is just a bolt on....it isn't. That is the big mistake with forced induction and if it isn't set up properly then KABOOM!
I had a 95 s10 ss with a 4.3( 200 hp) stock with a free flow exaust,filter, computer. I bolted a vortech supercharger to it. the truck had like 8000kms on it. It made CRAZY HP. But the truck was not well setup. I need to get a throttlebody, feul pump, stall converter and shift kit. After all that I blew the engine on the 410
it only lasted for like 2 months. There was not enough left of the engine to even fix it. I need a new block and heads. and everything in between.
Make sure it is done right ..I cut corners and look what happened
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Old 12-03-2002, 09:45 PM   #12
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I'm with M50E30 on the durability aspect. I would like a fast car, but it would prefer something that would drive me 365days/year. I'm sick of cars that cost a fortune and are in the workshop 9months of the year.I probably wouldn't mind rebuilding the engine every 24months.
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Old 12-03-2002, 09:59 PM   #13
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V6 4.3 L are strong and a bad setting kill it.. so i would not mess on putting a F/I on a M20...
Ok! everybody talk about M50 swap a better way. but M50 engine are expensive.. so a E30 325I engine! ? the fitting will be easier? and the transmission his the same as a 325e ?
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Old 12-03-2002, 10:08 PM   #14
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Quote:
Originally posted by Sylak
...but M50 engine are expensive...

...and the transmission his the same as a 325e ?
You can buy a M50 engine with the proper parts to do the very simple install (but a pro should wire it up) for the cost of a good turbo kit! I bought my complete conversion for $5000. And for transmission...i'm using the old M20 5-speed! I think it is on the way out since it's life of 240,000km+ of hard driving is catching up. But those are cheap to replace.
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Old 12-03-2002, 10:31 PM   #15
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so a M20 will bolt up to a M50 without a bracket or plate or anything. no customizingthe bellhousing?
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