1995 318is engine swap - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 07-09-2004, 07:40 AM
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Hello everyone, I have a question.
I'm currently driving a318is and was wondering if it pays to put a 325 or a 328 engine in there.
Is that worth it?, and what modifications have to be done?
What would it run me?

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#2 (permalink) Old 07-09-2004, 08:38 AM
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Bavarian Auto Engines


check this site out, sells engines and prices...any e36 engine will fit in any e36 vehicle, its mostly plug and play so long as you have all the right components. The biggest things, you will have to change out the computers and the differential as well to handle a different engine...

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#3 (permalink) Old 07-09-2004, 08:45 AM
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don't for get the suspension... a 6 is gonna weigh a lot more than a that 4 banger.

but if you really wanna make it worth your time. do it like frank... and drop an M5 Engine in there.

2008 128i Jetblack
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#4 (permalink) Old 07-09-2004, 12:50 PM
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With the 318i moving to an I6 setup will take a bit of doing. As before mention complete new front suspension. The entire engine, might as well get the tranny to. New dirve shaft, basically you need the whole powertrain. You also need the rear subframe off of a I6 car, 323i, 325i, 328i what ever you can find, because the mounts for the differential are different and the 4cly diff won't work because of the difference in the drive shaft. Hope this hasn't scared you off from doing the swap.
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#5 (permalink) Old 07-09-2004, 02:03 PM
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I do not have the knowledge (or the tools) yet to perform the swap myself...so i'm appointed to a mechanic n

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#6 (permalink) Old 07-09-2004, 02:05 PM
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If I were to upgrade my 325is' I6 to, say, a M3 or 328 engine, would I have to swap many parts such as sub frames and susp? Or just engine, drive-line, and ECU?

<span style='color:black'>93 325is</span>
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#7 (permalink) Old 07-09-2004, 05:39 PM
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Take the engine you've got now. Bore it as far as it will go (might make it 2L) drop in a forged crankshaft, connecting rods, pistons, rework the head. Then pinch your pennies and all up Vortech and supercharge that sucker.

If you play your cards right and lower the compression to like 8:1 you could push 15lbs of boost and crank that sucker up to 250 horse. That would fly in a 318 shell. But this would cost about as much as any of the other swaps and if it were cheaper it'd be like 1k cheaper.

Plus you get the custom factor.

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#8 (permalink) Old 07-09-2004, 06:10 PM
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keep your 318 engine. it is faster.

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#9 (permalink) Old 07-09-2004, 06:30 PM
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Quote:
Originally posted by brien4787@Jul 9 2004, 06:50 PM
keep your 318 engine. it is faster.
Faster? how come?

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#10 (permalink) Old 07-09-2004, 06:49 PM
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The 318is has got around 140hp right, let's say I want to make it a good 200? what would i need?

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#11 (permalink) Old 07-09-2004, 06:54 PM
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S/C or T/C or some very very good headwork and an extra .2 liters. Injectors, intake, exaust. Yeah, just go forced induction.

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#12 (permalink) Old 07-09-2004, 07:02 PM
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Quote:
Originally posted by Kevin325i@Jul 9 2004, 07:34 PM
S/C or T/C or some very very good headwork and an extra .2 liters. Injectors, intake, exaust. Yeah, just go forced induction.

Kevin
Another question, what's the difference between supercharging and turbocharging?
And how much would this cylinder work run me?

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#13 (permalink) Old 07-09-2004, 07:37 PM
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i never said what the 318 was than. haha, sucker.
get on eof these instead of dropping m3 engine or whatever...it looks fast..
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#14 (permalink) Old 07-09-2004, 07:40 PM
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supercharger - belt driven - more power off the line - no lag
turbocharger - exhaust driven - more power at higher revs - turbo lag

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#15 (permalink) Old 07-09-2004, 08:10 PM
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Quote:
Originally posted by e36_m3_Turbo@Jul 9 2004, 08:20 PM
supercharger - belt driven - more power off the line - no lag
turbocharger - exhaust driven - more power at higher revs - turbo lag
Meaning a supercharger will rob some of the engine's power in order to spin up. The upside to this is no lag (immediate power on tap) and a cooler running engine.

A turbocharger uses the exhaust gasses to spool up (using none of the engine's power), but as you would guess, it takes time for the turbo to spool up (wont turn until exhuast is present i.e. you have input throtle) which= turbo lag.

Neither are a fantastic idea, as they shorten the life of your engine due to the added stress. I am guessing you don't have 30K on the clock, and an aging engine introduced to a forced induction system will do so even faster. A displacement increase would be the biggest bang for the buck and would be a "safer" mod regarding engine durability.

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