Wtb: Rb26 Cam Cap

[N1GTR]

Hey guys

As said, i need a "number two inlet cam cap"

URGENT!!!

I need the seller to be able to mail it to me asap

PM me or reply here, thanks heaps

[legend01]

I dont have one from an rb26 but I do from an rb20 head the cam's are interchangerable so maybe it will do ???

[N1GTR]

Thanks Peter ill find out if they're the same part

Probably are

[Lunatikk]

Hey Steve-o I don't think you're going to get outa jail that easily mate. You might. but there's a "but".......

All caps- be it mains, big-end or in your case cam caps are a "machined fit". Meaning, in this case, a set of caps are fitted to the head (slightly under-sized) & then line-bored to both "true" the alignment & set the appropriate clearance. It's not just a case of throwing another #2 at it & she'll be right unfortunately........

Having said that I have in the past gone thru collections of odd cam caps to replace a missing one on bike engines. Strip out the valves on the appropriate bank (without losing anything else ), lay in the cam & start the process-of-elimination by fitting each avail spare cap & then rotating the cam by hand to get a "feel" of whether it's too tight, too loose or just right 'til you find one that will do the job. I knew a girl like that once.......

If the head's already on the motor & buttoned-up, then it all gets a bit more complicated. There are right ways, there are wrong ways & my above suggestion, whilst not technically correct, is somewhere in between. It's your engine, only you can decide what you want to do. BTW to get a "feel" of what's right wrong or otherwise, fit up one of the existing caps, give it a spin & no you can't use this method with the valves/springs in place. If they are, you could try & plasti-gauge the cap in question but I personally have never done this on cam caps under tension from valve springs so I can't comment either way.

I'm assuming you don't have access to a shop or proper measuring equipment either in all of the above.

Good Luck & let us all know how you go.

[Beer Baron]

yeah, it's even more crucial on an L6 as the cams are so long. plenty of RB26/5/0s out there with snapped cams even just from not being torqued up quite right or in the right order. wrong sized cap will be a problem.