Originally posted by shEck3lls0
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shEck3lls0's 318i Rallycross/ DD (slow) build
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So I was looking into m42 cam timing. Since the stock m42 cams are adjustable, I have read that adjusting the intake cam by about 4-5 degrees can free up a little more power.
Supposedly, bmw set the cams how they are to give a little bit of a smoother idle, which in turn causes a slight loss in power. Though I know it wont gain much power, it could be useful in rallycross with a chip that already adjusts the intake timing slightly to maybe get a little bit more response out of the motor, which could be useful coming out of tight corners where sometimes I think about dropping into first when I should really stay in second considering the loss of time shifting.
Anyone else with insight on the m42 adjustable cams, please feel free to chime in. I might mess around with them this weekend just to see if there are any differences.sigpic
1989 Alpine 325is 2dr m50 swapped
Build Thread:
Current ongoing build. Check it out!
1991 318is 4dr rallycross
Rallycross Build Thread.
1991 Alpine 318is coupe - sold
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My research on the matter indicated that the centered spot was best....if you retard the timing the engine will choke up high (like when you're on a straight) and if you advance it you lose low-end.
After doing a lot of reading on it I decided just to leave mine in the middle/stock position. I do have a Conforti chip though.Stage rally/rallycross e30 build/competition journal
Track/street e21 build
visit Condor Speed Shop
visit Motorsport Hardware
[FONT="Franklin Gothic Medium"] 1985 318i/M50 Rally Car - 1988 Porsche 924S - 2005 Sequoia tow pig - 2018 GTI
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Originally posted by irish44j View PostMy research on the matter indicated that the centered spot was best....if you retard the timing the engine will choke up high (like when you're on a straight) and if you advance it you lose low-end.
After doing a lot of reading on it I decided just to leave mine in the middle/stock position. I do have a Conforti chip though.sigpic
1989 Alpine 325is 2dr m50 swapped
Build Thread:
Current ongoing build. Check it out!
1991 318is 4dr rallycross
Rallycross Build Thread.
1991 Alpine 318is coupe - sold
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So looked through my box of "M42/M44" parts today. I have an m44 crank and cams along with m44 pistons. I am going to do some research as to what I can do with these and an m42 block. Probably will just sell the parts off, but could be a cool engine build for the car.
Also picked up a spare m42 awhile ago in case my current one goes. I pulled the plugs on that one today and check out the cam gears. It also came with a set of coil on plug kit. Cam gears looked pretty good but the plugs had some oil on them. :/
Coil on plugs.
sigpic
1989 Alpine 325is 2dr m50 swapped
Build Thread:
Current ongoing build. Check it out!
1991 318is 4dr rallycross
Rallycross Build Thread.
1991 Alpine 318is coupe - sold
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looks like the valve cover gaskets around the plug holes were leaky....no biggie.Stage rally/rallycross e30 build/competition journal
Track/street e21 build
visit Condor Speed Shop
visit Motorsport Hardware
[FONT="Franklin Gothic Medium"] 1985 318i/M50 Rally Car - 1988 Porsche 924S - 2005 Sequoia tow pig - 2018 GTI
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i should probably pull my VC and see what mine look like!1991 318i Slicktop - Sold
1991 325ix - Sold
1997 Estoril M3 Coupe - Sold
1986 325es - RIP
1997 328is - Sold
1995 Avus M3
instagram @MattLarzz
//M42 GOON-SQUAD
http://www.r3vlimited.com/board/showthread.php?t=281596
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So I didnt get much work done on the car this past weekend. My welder has been broken and I still can't figure out the issue with it. Instead I did a little bit of scrapping. Drove down to VA to pick up some stuff including a valance for my other car from a guy along with about 1.5 worth of e30s in scrap.
Bonus points to anybody who can recognize who's car that is in there. So sad to see it cut up. :(
Also notice the mudflaps bending back a little. It may be due to all the rain/sleet and cold weather we've been having. No biggie as long as it stays uniform.
sigpic
1989 Alpine 325is 2dr m50 swapped
Build Thread:
Current ongoing build. Check it out!
1991 318is 4dr rallycross
Rallycross Build Thread.
1991 Alpine 318is coupe - sold
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Just took a quick video of the exhaust because it was nice out today and I just got it finished the other day. Might be adding a resonator or glasspack in right after the cat since as of now it only has the Magnaflow muffler and some weird looking resonator thats maybe 6" long right after the cat.
Here is the link if it doesnt work.
Last edited by shEck3lls0; 02-24-2013, 08:57 PM.sigpic
1989 Alpine 325is 2dr m50 swapped
Build Thread:
Current ongoing build. Check it out!
1991 318is 4dr rallycross
Rallycross Build Thread.
1991 Alpine 318is coupe - sold
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hmmm....now I'm kind of regretting giving you that muffler, sounds good with the resonator in place (which I didn't have, so it didn't sound good). Between that and the wheel studs I gave you, you owe me one, lol.
wind noise fail with windows down though, haha.
we'll have to do a comparison once I get the OEM resonator back on with the Dynomax muffler I'm using.Stage rally/rallycross e30 build/competition journal
Track/street e21 build
visit Condor Speed Shop
visit Motorsport Hardware
[FONT="Franklin Gothic Medium"] 1985 318i/M50 Rally Car - 1988 Porsche 924S - 2005 Sequoia tow pig - 2018 GTI
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the chevy that goes by at 1:09 sounds HAWWWWT :)
I'd have laughed if the biker saw the camera there and stopped like "oh, nice..."Stage rally/rallycross e30 build/competition journal
Track/street e21 build
visit Condor Speed Shop
visit Motorsport Hardware
[FONT="Franklin Gothic Medium"] 1985 318i/M50 Rally Car - 1988 Porsche 924S - 2005 Sequoia tow pig - 2018 GTI
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Originally posted by irish44j View Postthe chevy that goes by at 1:09 sounds HAWWWWT :)
I'd have laughed if the biker saw the camera there and stopped like "oh, nice..."
And the biker did look back at it. hahaha. It was my Iphone sitting propped up on a center console. hahaha.sigpic
1989 Alpine 325is 2dr m50 swapped
Build Thread:
Current ongoing build. Check it out!
1991 318is 4dr rallycross
Rallycross Build Thread.
1991 Alpine 318is coupe - sold
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