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M42 Reference / Re: Complete In-Color Engine Wiring Diagram
« on: May 21, 2022, 09:25:15 PM »
Awesome Work!!
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For Sale / Re: Feeler: FS '91 318is w/ M42 Stroker etc..
« on: May 08, 2020, 09:22:58 AM »
Photos mate photos?
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Engine + Driveline / Re: M42+44 turbo build
« on: October 31, 2016, 04:44:22 PM »
It's safe to go 86 mm on the bore for forced induction build.
But you will need either a m44 head gasket or a metal head gasket
But you will need either a m44 head gasket or a metal head gasket
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Engine + Driveline / Re: M42+44 turbo build
« on: October 30, 2016, 03:40:05 PM »
Hi
That works
Bore is different though on the block.
Cheers
That works
Bore is different though on the block.
Cheers
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Engine management / Re: NA M42 base maps
« on: October 19, 2016, 11:06:30 PM »
Interesting about the current requirements
Does sort of make sense though
I wonder if that would be the same on the coil on plug set up some of us have. I doubt it!
Thanks
Does sort of make sense though
I wonder if that would be the same on the coil on plug set up some of us have. I doubt it!
Thanks
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Engine + Driveline / Re: Cam regrinding
« on: October 15, 2016, 06:06:09 PM »
Cam regrinding is a process where they first rough up the smooth cam surface then weld more material to the surface making the lobe bigger then grind the surface smooth again.
Advantages are is that it is relatively inexpensive.
Disadvantages are if the built up welded on lobe breaks off then that partular valve might 1. Be Stuck in up 2. Be stuck in down position.
Which can cause significant problems
Valves and pistons might argue!
Advantages are is that it is relatively inexpensive.
Disadvantages are if the built up welded on lobe breaks off then that partular valve might 1. Be Stuck in up 2. Be stuck in down position.
Which can cause significant problems
Valves and pistons might argue!
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Swaps, Turbos, Buildups / Re: the m42 stroker in action
« on: October 14, 2016, 03:55:25 AM »
That second video looks great fun!
Cranks ah yes
M42b18 81 mm 8 counterweights
M44b19 83.5 mm 7 counterweights and timing wheel
M47d20 88 mm 8 counterweights
M47tud20 89.6 mm 3 counterweights and timing wheel
M47tu2d20 89.6 mm 7 counterweights and timing wheel
M44 hartge 91 mm 8 counterweights
M44 hartge 100 mm 4 counterweights
Note:- all m47tu's need the nose extending!
Note:- 100mm hartge crankshaft requires block extending!
Cranks ah yes
M42b18 81 mm 8 counterweights
M44b19 83.5 mm 7 counterweights and timing wheel
M47d20 88 mm 8 counterweights
M47tud20 89.6 mm 3 counterweights and timing wheel
M47tu2d20 89.6 mm 7 counterweights and timing wheel
M44 hartge 91 mm 8 counterweights
M44 hartge 100 mm 4 counterweights
Note:- all m47tu's need the nose extending!
Note:- 100mm hartge crankshaft requires block extending!
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Swaps, Turbos, Buildups / Re: Fast way racer turbo kit for m42
« on: October 14, 2016, 02:53:46 AM »
There is a very well built turbo kit, that is made on another forum. Had really good reviews.
I'd go there first!
I'd go there first!
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Engine + Driveline / Re: M42 freshen-up and partial rebuild
« on: October 11, 2016, 05:56:03 PM »
Hi
Just checked your latest photos. That's just weird must have some forward or backwards movement!
But I don't understand how or why!
But note how the oil grove disappears after 270 deg total.
Your trying to get that all the way around.
I got my 360 deg oil bearings from MM,
I think they where Malve bearings and there using 2 top sets if that makes sense. To get the 360 deg grove.
Cheers Rohan
Just checked your latest photos. That's just weird must have some forward or backwards movement!
But I don't understand how or why!
But note how the oil grove disappears after 270 deg total.
Your trying to get that all the way around.
I got my 360 deg oil bearings from MM,
I think they where Malve bearings and there using 2 top sets if that makes sense. To get the 360 deg grove.
Cheers Rohan
10
Engine + Driveline / Re: Cam specs
« on: October 09, 2016, 07:19:19 PM »
Ok I get it.
Nope you will need a e30 318is m42 inlet manifold and they are getting rare!
Because they are very good.
Now there are 2 parts to this manifold upper and lower. Lower I think is identical to the one you have but don't quote me on that I'm not 100% there.
I think the best way to do this would be to cut the runners on the lower part in such a way that the manifold will fit under the bonnet. Then weld the joining flanges on clean it up with a dremel. Bolt the uppper part on and bolt to engine!
Yes that's what I'm talking about increasing the throttle bore size, not uncommon at all!
Nope you will need a e30 318is m42 inlet manifold and they are getting rare!
Because they are very good.
Now there are 2 parts to this manifold upper and lower. Lower I think is identical to the one you have but don't quote me on that I'm not 100% there.
I think the best way to do this would be to cut the runners on the lower part in such a way that the manifold will fit under the bonnet. Then weld the joining flanges on clean it up with a dremel. Bolt the uppper part on and bolt to engine!
Yes that's what I'm talking about increasing the throttle bore size, not uncommon at all!
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Engine + Driveline / Re: Cam specs
« on: October 09, 2016, 06:45:53 PM »
With those regs it's time you got a e30 inlet manifold.
But you will have to cut it down to fit.
But that will only be on the runners, so legal!
M50 manifold won't be legal. Nor will altering the e30 manifold like the turbo build here!
FYI there are places that bore out the e30 throttle body, more air again! But it looks exactly the same!
But you will have to cut it down to fit.
But that will only be on the runners, so legal!
M50 manifold won't be legal. Nor will altering the e30 manifold like the turbo build here!
FYI there are places that bore out the e30 throttle body, more air again! But it looks exactly the same!
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Engine + Driveline / Re: Cam specs
« on: October 09, 2016, 06:37:52 PM »Anyway try this because the disa inlet manifold was designed to give more torque down low, but to do that they had butterflies in the inlet manifold and not a very smooth air flow. Which starved the normal m44 of air at decent rpm! Hence it had less go in it compared to e30 m42.
Do you think changing cams is pointless?
No essentially trying to do the same thing. The method I'm suggesting gets rid of the air restriction caused by disa giving you more air.
The bigger cams are opening the valves longer giving you more air. Increased duration!
However your new cams wider opening will give you more air but disa will stop that. Increased lift!
I think the disa manifold is already a anchor on your engine!
So I'd go both, but you will lose a bit down low with those cams.
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Engine + Driveline / Re: Cam specs
« on: October 09, 2016, 06:22:44 PM »
Anyway try this because the disa inlet manifold was designed to give more torque down low, but to do that they had butterflies in the inlet manifold and not a very smooth air flow. Which starved the normal m44 of air at decent rpm! Hence it had less go in it compared to e30 m42.
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Engine + Driveline / Re: Cam specs
« on: October 09, 2016, 06:18:08 PM »
Hi Sion
That's right I remember now m44 head!
So it's a maf setup with the lightened 88 crank and 87 pistons.
I wonder if you could cut down the e30 inlet manifold a bit and do something like the inlet manifold of the guy who's doing that really nice turbo build here.
Hang on cut down a m50 inlet manifold?
That's right I remember now m44 head!
So it's a maf setup with the lightened 88 crank and 87 pistons.
I wonder if you could cut down the e30 inlet manifold a bit and do something like the inlet manifold of the guy who's doing that really nice turbo build here.
Hang on cut down a m50 inlet manifold?