Camshafts & TB

Therealjj91 · Post by **Therealjj91** » Tue Oct 15, 2013 4:03 pm

Hey all, I might be buying a set of ATR cams and a 62mm throttle body for my 1998 UKDM lude and my mechanic is asking me if the cambelt is the same size as the one that's on there now or will I need a new one? And also without a ecu tune after installing these parts will my car still run okay? Thanks.

Post by **Lude-dude** » Tue Oct 15, 2013 4:09 pm

which 62mm TB standard one?

you may see drop in torque, I would get some engine management on the car

bit puzzled by the cambelt question? why would it be different size?

Therealjj91 · Post by **Therealjj91** » Tue Oct 15, 2013 4:17 pm

Yeah I believe mine is a 60mm and the new one is a 62mm from the type s and I don't know he just asked me cause they were upgraded cams if they needed a different size belt? And so you think the car wouldn't run properly without a tune?

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Tue Oct 15, 2013 5:04 pm

Cam profile is different but pulleys the same, so same belt.

Therealjj91 · Post by **Therealjj91** » Tue Oct 15, 2013 5:07 pm

Thanks but would I need a tune? I know I won't get the full benefit of these unless I get a tune which I can't afford to do atm but would the car still run okay I.e able to get me to work and get, etc. without any problems?

CrunchyAdams82 · Post by **CrunchyAdams82** » Tue Oct 15, 2013 5:38 pm

Yes, the car will still run ok. You will want to fit a spoon copy chip to your ECU though. And you might find it over fuels a bit.

Like you & others have said, to see the full benefits of such mods you will want a bespoke ecu & tuning..but I would also get an uprated intake manifold & exhaust manifold before doing that personally.

Not sure it's really necessary for just a 62mm TB & ATR cams tbh. Just a chip will do for now imo.

Therealjj91 · Post by **Therealjj91** » Tue Oct 15, 2013 5:51 pm

But I've got the unchippable ecu

lol

CrunchyAdams82 · Post by **CrunchyAdams82** » Tue Oct 15, 2013 7:28 pm

Nice one. Only thing is, if you tune it initially, if & when you add extra parts you'll need to get it tuned again. But no biggy I suppose.