engine is being rebuilt by pip barker, head chief mechanic of the old bmw jps team, he is retired but agreed to rebuild my engine,
broken valve spring.
throttles, the yellow caps, do you just pull them off carefully, also the vacuum brown rubber caps, took them off and cleaned out thoroughly, put rubbers back on, how does this work if you then seal them, how does air get in or out.
regards
richard
bmw m635 itb,s
Moderators: GRNSHRK, ron, bfons
Re: bmw m635 itb,s
If it's the yellow caps I think you mean, aren't they intended to be single use only? And wasn't there something about new ones were invariably blue and therefore even with a casual glance you could see if the ITBs had been "tampered" with.
Phil
__________________________
1988 Highline 635 CSi
__________________________
1988 Highline 635 CSi
Re: bmw m635 itb,s
hi, thanks for the reply, so do you break them to get them off, just want to clean the idle screws beneath them, also the rubber caps, can you let me know how they work.
regards richard
regards richard
Re: bmw m635 itb,s
Wouldn't Pip be doing this when he gets the engine? Or are you doing some of the pre-work before sending it down?
04/1986 635csi Euro spec
Australian Delivered, RHD
Australian Delivered, RHD
Re: bmw m635 itb,s
hi, he is doing the engine only, he has the block with the head, all the rest of the bits i took off and are cleaning them and buying all new pipework and bits, have completed all new seals on the gearbox, so i was cleaning the itb,s, when i came across the caps and the rubbers, the rubbers have a spigot that goes right thru' the inside of the throttle, then you put the rubbers back and it is sealed, so what do they do, and i cannot get the yellow caps off
regards
richard
regards
richard
Re: bmw m635 itb,s
Sounds like you are talking about the balancing ports. You connect your manometer to them, and then are able to balance out the intake flow. Best approach is to use a liquid, 6-port manometer. The caps are just plain old black rubber.
José
José
1987 M6 - My dream car
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Re: bmw m635 itb,s
As for M88/S38 ITB Adjustment Screw Cap replacements I've ordered multiple sets from Pelican Parts...
https://www.pelicanparts.com/More_Info/ ... ULEALw_wcB
https://www.pelicanparts.com/More_Info/ ... ULEALw_wcB
DV
Motorsport & Vintage Coupes
ALPINA Oldtimers of Course...
BMW-Classic CCA
Motorsport & Vintage Coupes
ALPINA Oldtimers of Course...
BMW-Classic CCA