Thread: Should I usw this cams in my sr20de ?

Bin it man and buy a replacement. Should see what my engine did to my stock Autech cams when the rockers went walking, now that was some proper damage!

Ok guys youre right!
But I found here some factorys in Germany that are specialised on repairin cams, i'll aks there first how or if its possible to repair them. If its to much Ithink i first only use the inlet cam and see how it works.

So i asked some Factories, some they that it is not possible to repair them. So there are 3 options

1. Just built in the intake cam and hope there is an increase of hp, also as not much with the combo

2. Buy a new one...which will cost me in Europe about 300€ which makes about 410 dollar ( only the outlet cam !)

3. I buy a stock outlet cam, send both cams ( so the stock one and the broken one ) and they they reface the original one like JWT Outlet cam... this seems to me the most cheap and secure Version

huh? are you saying regrind a stock cam to JWT specs? that is not possible

So do you mean there is not enough Material to regrind it to have the same profile?

So after calling some factories It would be possible to resurface the stock outlat cam to max. 262° they said more ist not possible, but the JWT Inlet cams has 264°
But I think it is the better way instead of using the stock outlec cam, and this way is pretty cheap.

Anyone now the stock degree's of the stock inlet and outlet cam? the engine is an RR EUDM Sr20DE lowport

What do you think guys?

what about the lift?

I really dont i called them and they said it is possible....

But i asked an engineer who builds engine and he give me the advise only to JWT inlet cam and leave the outlet cam stock, he said it would the better not to use a resurfaced cam...I cant really understand this advise.

Not without welding, now if you had a blank billet to grind it would be fine. Saying that cams are welded and ground all the time as long as they know what they are doing.

I still don't see why the cam can't be repaired? The cam bolt goes way into the cam, I would say maybe halfway into the first journal, so the cam gear will be held properly axially, the dowel pin has to take the brunt of the rotational force, some will be transfered by friction to the entire face of course but we have to think worst case.

similar method used to weld and regrind can be appled to repair the damage, they would have to remove dowel pin, open up that crack into the dowel hole, weld all the way into the dowel hole then machine back to spec and redrill dowell hole

or

drill new dowel hole at 180 deg to the original and use the cam as is, the crack cannot travel any more because the back of it has been opened by the chip broken off and it is stopped from going into the cam by the dowell hole.

that's the way I see it anyways

Hi,
Im not sure i they do welding, but the cam is of cast iron so I dont know how they should weld it. But it is possible im sure, but you cant do it as long as you wont there is max.

The reason for not repearing ist, when they would weld this are, it never we would stronm enough as it was before, also the whole cam would warp because of the heat through welding.