RSR case shuffle /throughbolt mod
 

Hello all.

Can anyone provide detail about the special throughbolts used on the RSR to reduce shuffle?

I assume the oilways were diverted somehow, ?

We are considering having some specially made...any takers?

Kind regards
David

As far as I remember the crankcase through bolts for the 2.8 RSR utilised a finer pitch (1.25) thread - still used the passages for oilways.

The finer-pitch bolts were then used for the '83-on SC models.

thanks for that, Andy.

yes I also think that they are fine pitch..

The specific mod we are plaznning is to use the thro bolt with a swelling in the middle, a tight sliding fit in the case bore..

This will of course block the oilway at that point..

Kind regards
David

The bolts with the "swelling" did not block the oil way, IIRC. They were necked down and the "swelling" in the center section is the same OD as both ends. They were done like this to save some weight. The "swelling" was left in to aborb/minimize harmonics that may have been created.

Cheers

Thanks, Catca.

Yes, I have seen those..as you say they do not act to shuflle pin at all..

But I belive there are also some which actually do form a tight fit..can anyone confirm?

Kind regards
David

HI yes i have some RSR 3.0 lt through bolts and they do act as shuffle pins with one side ground off for the oil way, the cases are bored to fit them, if you are intrested www.bsmotorsport.co.uk are making sets of through bolts and exchange/mod your's cases now

regards mike

Will these work in any early case? Specifically a 1R mag case?

HI should not be a prob', FAX neil at BSMotorsport on UK+ 01296 658253 for more info, i will be seeing him on sunday and will find out more.

regards mike

I didn't fax Neil yet, but am curious what the service costs. Mike, what have you learned? I am leery of shipping my case to England for machine work, not because of the distance, but because of the potential for disaster in shipping. My numbers matching case is priceless to me.

HI i have been i touch with my bruv' and the bolts are delayed, the machine work can be done with you he said, send a E-mail to neil@bsmotorsport.co.uk or fax for more info

regards mike

Done.