I'm Nick from Thailand and using M40 now. Most of thai guys who using E30 change the old engine to SR20DE or SR20DET. But I need to use and modify M40. I'm hopeless about my idea in Thailand . Does anyone have a suggestion for me? Thanks.
How to modify M40?
Moderator: martauto
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clinick
- E30 Zone Newbie
- Posts: 19
- Joined: Tue Jun 12, 2007 11:00 pm
- Location: Thailand
Hi everyone.
I'm Nick from Thailand and using M40 now. Most of thai guys who using E30 change the old engine to SR20DE or SR20DET. But I need to use and modify M40. I'm hopeless about my idea in Thailand . Does anyone have a suggestion for me? Thanks.
I'm Nick from Thailand and using M40 now. Most of thai guys who using E30 change the old engine to SR20DE or SR20DET. But I need to use and modify M40. I'm hopeless about my idea in Thailand . Does anyone have a suggestion for me? Thanks.
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maxfield
- Old Skooler
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There is hardly anything you can do apart from chip and altering cam timing.
I've searched and searched.
I've searched and searched.
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MJG
- E30 Zone Regular
- Posts: 405
- Joined: Fri Jul 28, 2006 11:00 pm
Just fit an SR - it's easy and powerful! Modifying the M40 will always be hard, just get whatever's easiest for you in Thailand.
If I couldn't find big capacity BMW engines for £200, but could get an SR for £500, then I'd just go with that!
If I couldn't find big capacity BMW engines for £200, but could get an SR for £500, then I'd just go with that!
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toby
- E30 Zone Addict
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I've wonder what a stanalone ecu like megasquirt would do for one of these. You could get one sent to you and set it up yourself.
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Jhonno
- Homo Hair
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old skool rim!
megasquirt, cam and exhaust is bout as far as it might go.. Headwork also i guess
megasquirt, cam and exhaust is bout as far as it might go.. Headwork also i guess
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m-dtech
- Unapproved Trader caution
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first thing id do is loose the wooden wheel and knob, thats gotta be worth 10bhp lol
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DanThe
- E30 Zone Team Member
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Is your windscreen tinted? 
Best thing to do with the M40 is get it out of your engine bay
Best thing to do with the M40 is get it out of your engine bay
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Andyboy
- Alpina Colada
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The M40 can be modified. Piper Cams do two camshafts, a 270 degree fast road and a 285 degree 'wild' stick. They quote 10 bhp and 14 bhp for these, but I'd use the 270 cam with a decent chip - should be good for 130 bhp. A bigger bore throttle body would be next. Change the cam along with the rockers, rocker pads (between the rocker and the valve) and the hydraulic lifters as well as the cambelt and all three rollers. That would sort out all the M40 issues and make it a pretty decent engine. The M40 is really a bag of shite in old age but one in perfect nick is a pretty good engine.
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clinick
- E30 Zone Newbie
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- Joined: Tue Jun 12, 2007 11:00 pm
- Location: Thailand
Thank you for all suggestion. So I should change camshaft and chip? I know only Dr. Schrick camshaft. Does anyone suggest me another brand? 
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E30BeemerLad
- Married to the E30 Zone
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reckon there would be anything to gain by fitting throttle bodies/ bike tb's and a standalone engine management?
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m-dtech
- Unapproved Trader caution
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Andyboy just quoted "Piper Cams"clinick wrote:Thank you for all suggestion. So I should change camshaft and chip? I know only Dr. Schrick camshaft. Does anyone suggest me another brand?
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e30bmlover
- Ac Schnitzer prophet
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engine swap?
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clinick
- E30 Zone Newbie
- Posts: 19
- Joined: Tue Jun 12, 2007 11:00 pm
- Location: Thailand
Oh! sorry. This is a problem for me because I always call the body and engine parts in Thai language. When I saw the words that you wrote, I look up in google search for the meanings and pictures.m-dtech wrote:Andyboy just quoted "Piper Cams"clinick wrote:Thank you for all suggestion. So I should change camshaft and chip? I know only Dr. Schrick camshaft. Does anyone suggest me another brand?
5 minutes ago, My friends called me that he can find another Hartge' parts for me. It's time for spending money again
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CHRISP
- Boost Junkie
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Turbo 170 bhp + 
318 turbo cab mint for sale offers
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snoops
- Major Helmet
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how much power would all this roughly give + cost ?Andyboy wrote:The M40 can be modified. Piper Cams do two camshafts, a 270 degree fast road and a 285 degree 'wild' stick. They quote 10 bhp and 14 bhp for these, but I'd use the 270 cam with a decent chip - should be good for 130 bhp. A bigger bore throttle body would be next. Change the cam along with the rockers, rocker pads (between the rocker and the valve) and the hydraulic lifters as well as the cambelt and all three rollers. That would sort out all the M40 issues and make it a pretty decent engine. The M40 is really a bag of shite in old age but one in perfect nick is a pretty good engine.