Adjustable cam ???

[Doc mx5]

Hi.i was told by the previous owner that my car had an adj cam in it.anyone ever her of it.and how do i adjust it.its a 94 1.8
i didnt ask him wen i was buyin it as i was in such a hurry to get out of there b4 he changed his mind about sellin it to me.(got it at a cheep price:))
thanks

[sidewaysreilly]

he is probably on about a Vernier Cam Pulley. Nice if combined with a higher lift cam on the intake side. Worth about 7bhp if set up correctly. Really need to know what your doing tho if you start adjusting things.

[charged_rs]

Hi.i was told by the previous owner that my car had an adj cam in it.anyone ever her of it.and how do i adjust it.its a 94 1.8
i didnt ask him wen i was buyin it as i was in such a hurry to get out of there b4 he changed his mind about sellin it to me.(got it at a cheep price:))
thanks

take the cam cover off and have a look, post a pic or two on here and we can tell you who makes them and maybe find you some instructions too

If you dont know what you are doing with an adjustable cam , put the spanner down and step away from the car as there is a good chance you will fuck something up.

[franksm]

Yeah, wouldn't be bothered with it. It'll let you tune the engine for high RPM (but then it won't idle or won't have any power whatsoever at low revs), or tune for low rpm (lots of low down torque but it won't be revvy at all. Not great for emissions either, all of this !

[Doc mx5]

Sound.thanks for all the info.ill take the rocker off an take afew pics and post them up in the nxt few days.i might b turnin the car into a track car so emmisions arnt an issue.thanks every one

[sidewaysreilly]

True Frank but will also let you set timing to what it should be also . Impossible with standard pulleys .

[Doc mx5]

Ill take afew pics temoro or sun.wat de you mean set the timing to what it should b

[sidewaysreilly]

Well, its a bit complicated if you dont understand cam timing in particular TDC Cam timing but this allows you to adjust the opening point of the inlet cam irrespective of the factory pulley/block marks to set the cam timing to the optimum when set against a disc fixed to the crank pulley.

The standard set up is good but combined with other mods particularly head work and different cams, it allows no adjustment to get the optimum whether it be mid range torque or holding onto torque higher up the rev range ( a screamer).

Vernier Pulleys allow you to do this. But, they are useless on a standard engine unless other mods are done. Fuel cut on mk 1's is 6900 and no amount of fiddling will get any more power above this.

[Doc mx5]

Ok.i wudnt really know much about that stuff.ill take afew pics in the morning if its not raining.i found this in behind the radio today.its alll hooked up.does anyone know what it is and how it works.thanks for all the help

[mx5ash]

It's a fuel controller, bit of info here
http://honda-tech.com/showthread.php?t=627124

[Doc mx5]

Cheers for that mate.i think im just gonna turn it off for time being.as ther are no lights coming up on the screen.maybe it not hooked up right.thanks

[Doc mx5]

Ill take afew pics temoro or sun.wat de you mean set the timing to what it should b

[sidewaysreilly]

Yeah, a very crude Vernier Pulley without the Vernier marks.

[charged_rs]

thats a diy affair...and badly done at that

personally id scrap it and return it to standard...it would be interesting to see what deg timing your car is currently running

[Doc mx5]

Ok.so wats this mean.is it fu***d.should i get rid of it.is there anyone around the dublin area that could have a look at it.or how do i check the timing