M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine + Driveline => Topic started by: lqbanotxano on May 20, 2012, 10:23:57 AM
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Well, my plan to buy a newer old BMW 3 series was shot down by my wife so…I got to keep working on my current car. I plan to do some major maintenance & some modifications to my engine at the end of the year. There is a chance of my having access to a blown M42 engine (spun bearings) from a 1991 E30 318i.
I have some questions…..
1. Is the 1991 block & timing gears, chain etc…the same? Can I use an E30 M42 block & put my intake manifold & accessories on it?
2. What is the most an M42 block can be bored & that stock pistons can be used & found?
3. Can someone send me the link (if there is one) to where I can find the part numbers to the timing rails, tensioner etc…modifications/updates?
4. There is already a pusher shroud & fan in front of my radiator. If I replace the clutch fan with a 16” electric puller fan & shroud, what happens to the pusher fan & shroud in front?
5. Other than sounding like a “fart can”, is there any drawback to the stock muffler? Is it very restrictive?
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1. YES all m42's (blocks) are the same
2. somewhere I saw a .020 over gasket and ring set though I can't remember where
3. http://www.realoem.com/bmw/partgrp.do?model=AJ93&mospid=47318&hg=11 (http://www.realoem.com/bmw/partgrp.do?model=AJ93&mospid=47318&hg=11)
4. Are you sure that Isn't the A/C fan and condensor??
5. IDK, I like the stock "header" although later versions from the e36 don't have the welded bolt/ports
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zacrl1230...
Thanks for the reply. Further clarification on my questions.
4. The engine has both a clutch fan on the engine, a shroud behind the radiator & an electric fan on a shroud on the front of the radiator.
5. I am trying to determine if it s worth it to change mufflers.
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Data point of 1, I removed the aux fan and the mechanical fan and have just a simple electric fan strapped to the back of the radiator. It has been doing fine. I ran with no fan at all for over a year before that but had to be careful to watch the gauge at long traffic lights on triple digit days. I only added the fan after the people that converted the AC to 134 suggested I'd need it for the AC to work.
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So yeah the one on the front is for the A/C
look up electric fan mod on this forum and do something like that
you can just do a cat-back exhaust job 100-400$$ depending on the shop and the brand of muffler you go with especially if the shop is a custom exhaust shop that will salvage your resonator
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Actually, not all M42's are the same. E30 M42's have a timing chain idler gear, 7mm valve stems, and double-wound valve springs among other things, where e36's got a slider, 6mm stems, a slightly different head and intake, and single wound springs. E36's also have knock sensors iirc.
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Delta cams will do a mild performance regrind for $95.00 each cam. They can't do welding because the cams are hollow. So it is a mild performance gain. I was thinking of sending my intake cam for regrind when I perform the engine refresh later this year.
Any comments on doing this?
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Any info on Delta cam question above?