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Wtb: Rb26 Cam Cap

N1GTR

By N1GTR,
in Wanted to Buy

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Lunatikk Rising Star

Lunatikk

Posted
Posted

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 :rolleyes: ), 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 Grand Master

Beer Baron

Posted
Posted

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.

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