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Author Topic: M42 head work  (Read 36028 times)

bwawuz02

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M42 head work
« Reply #15 on: November 22, 2011, 04:36:52 AM »
just gotta throw you're money in everyone's face... snooty jerk. j/k :)
PS, i'm gonna snag an M47 crank while I'm here and I figured out which rods MM uses for their builds (off-the-shelf, acura). put that in your pipe
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Warsteiner

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« Reply #16 on: November 22, 2011, 06:12:16 AM »
I know that I've posted my build briefly somewhere. I already told everyone that the 138mm rod from a B18C (GSR) is the one to use because of an almost direct fit, BUT  you have to rebush the small end because it's only 21mm not 22mm hence the reason that MM uses a custom piston with 21mm piston pin. I got mine from a very reputable source Nick Arias.
http://www.atomicspeedware.com/b18c1gsrvtec.aspx

 How's that? Anything else you'd like to know?:D I have no secrets about this stuff. I want everyone running strokers with Carbon airboxes and having tons of fun!! I don't have the details yet but I was told from the guy in Thailand that the best piston to use is the Toyota 2J? I have to look into it.

Cheers,
~Ralph
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bwawuz02

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M42 head work
« Reply #17 on: November 22, 2011, 04:34:24 PM »
Just for the record, I hate liking you :)
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Warsteiner

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M42 head work
« Reply #18 on: November 22, 2011, 08:49:31 PM »
Hahahahaha. Yeah...I'm a likable person if  you get to know me.  I just got home from Thailand last night. I have not seen my car yet to see if my E30M3 exhaust with custom header from 666 Fabrication was finished. I will start a new thread and post all the goodies. However I can't post pics here so I'll work with Denis or someone to help me with that......

Until the next post......

FYI... did you know that you can adapt the 33mm cam trays from the E36M3 to work on our heads? hahahahaha........

Cheers,
~Ralph
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dsm2002

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M42 head work
« Reply #19 on: November 22, 2011, 09:33:20 PM »
Quote from: Warsteiner;108262
Hahahahaha. Yeah...I'm a likable person if  you get to know me.  I just got home from Thailand last night. I have not seen my car yet to see if my E30M3 exhaust with custom header from 666 Fabrication was finished. I will start a new thread and post all the goodies. However I can't post pics here so I'll work with Denis or someone to help me with that......

Until the next post......

FYI... did you know that you can adapt the 33mm cam trays from the E36M3 to work on our heads? hahahahaha........

Cheers,
~Ralph


Ralph, I look forward to the next instalment from you. :)

David
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benz-tech

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M42 head work
« Reply #20 on: December 17, 2011, 02:23:56 AM »
Quote from: Boyracer;108046
I think with some effort bit of gains can be found without having deep understanding of porting.



More involved is to remove valve guide that protrudes to intake port but that should yield nice gain.
.


I just tried this today. It isn't as hard as you think. One tip I heard from a pro head porter was to hone out the bore of the guide to just above the port roof before grinding down the guide. Soooo, since I have a free bare head to practice on, I took a slightly larger drill bit that the valve stem diameter, I drilled down about a 1/2" very slowly. Then I ground down the rest of the guide 'till it was flush with the port roof. Doing it this way means the valve is not pushed sideways by a guide only touching it on one side. Does any of that make sense? Either way it seems to have opened up the bowl area nicely. I do not feel confident enough with my skills to really open up the ports. The head is at work so I cant take a pic at the moment.
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Pi is apparently the multiplier for your engine swap budget as well.

bflan2001

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M42 head work
« Reply #21 on: December 17, 2011, 12:14:15 PM »
Quote from: Warsteiner;108262

FYI... did you know that you can adapt the 33mm cam trays from the E36M3 to work on our heads? hahahahaha........

Cheers,
~Ralph


what's the benefit of running these cam trays?
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Warsteiner

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« Reply #22 on: December 17, 2011, 02:21:10 PM »
33mm buckets....lighter  vs the heavier 35mm stock or M5X

Ralph
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bwawuz02

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« Reply #23 on: December 17, 2011, 03:57:42 PM »
what's the weight on those? lighter than the VW lifters?
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benz-tech

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« Reply #24 on: December 17, 2011, 04:17:09 PM »
That was my next question
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Pi is apparently the multiplier for your engine swap budget as well.

bflan2001

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« Reply #25 on: December 17, 2011, 06:00:26 PM »
i just bought a set of vw lifters so i guess i'll be sticking with the stock trays. does anyone have actual weights of the different lifters available? i tried to weigh my stock lifters but they had some oil inside so i don't think it was accurate, just over 70 grams i think. i'll be measuring the vw lifters when i install them but they're staying sealed up and safe for now.
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Warsteiner

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« Reply #26 on: December 17, 2011, 08:49:43 PM »
44gms vs 53gms for VW.

WEIGHT SAVINGS
My valve train saves you 1,297 grams or 2.86 lbs over stock. 488 grams or 1.08 lbs over the 35mm lightened setup.:D

~Ralph
« Last Edit: March 26, 2014, 07:09:47 PM by Warsteiner »
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bwawuz02

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M42 head work
« Reply #27 on: December 18, 2011, 08:19:09 AM »
Quote from: Warsteiner;108990
44gms vs 53gms for VW.

WEIGHT SAVINGS
My valve train saves you 1,328 grams or 2.93 lbs over stock. 848gms or 1.87lbs over the 35mm lightened setup.:D

~Ralph


Alright ralph, time for a write up. I'll have another M42 to play with once I swap in the one I just finished. Damn you. Are the M42 cams retained?
(I'd really like to build an M42 turbo touring with an M47 crank :))
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bflan2001

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M42 head work
« Reply #28 on: December 18, 2011, 01:11:54 PM »
where does all the extra weight savings come from? actual lifter weight savings is only 250g over stock, 150 over the VW lifters.

m42 - 65x16= 1040
vw - 53x16= 848
33mm - 44x16= 704
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MLM

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M42 head work
« Reply #29 on: December 18, 2011, 03:12:11 PM »
Does it have to be a M3 cam tray? or will other M5X cam trays work? I assume the M3 is recomended because it already has solid lifters? If so solid lifter conversions for M5X heads are readily available and would negate the need to track down a rare M3 head.
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