Recent content by Gabby

I guess it was emissions rules and they didn't want anybody messing with carbs (well, that worked!). As far as I can find out here, the K8 here had a different PD carb and needles were fixed, but the PD41s on K7s have five grooves.

Appreciate your detailed reply. Perhaps I am being a little impatient; I will raise it one slot only and try again. I guess I am a little worried about being too lean and possibly causing damage, but I wasn't aware that the plug colour is less reliable at lower throttle openings. Thanks again.

I might be able to answer my question now ... found an old set of identical carbs with the same as my original main jets too, in a bin and checked the clip - also in the top position (#1). I think these PD41As with 115 mains were used only in K7s (could be wrong though) so I'll assume that's...

Thanks for your reply. My needles are F2051E, so perhaps different. Can you tell me where you found the -1? And does that mean one from the top?

Hi gurus. I have a 77 police model - CB750P7. The carbs are PD41As and the stock main jet size was 115. Can anybody tell me where the needle clip should be set for stock please? Nothing in the manuals is conclusive. I'm certain the carbs had never been apart until I rebuilt them and the clips...

Thanks Santa for my new jets!

Thanks for the quick reply. Yes, the other discs with changed grooves are the correct type (ie not B). It makes sense that the grooves go the same way for sure. Looks like it must be an improvement, or certainly no worse, as these guys have been selling them for a while with no apparent problems.

I've got a new set of discs to install (ex-UK) and see some differences to what I removed. The outer disc (B?) has the angled grooves and that is the same as my original and is what the manual shows. However the other six discs also have the angled grooves whereas the originals have the straight...

Thanks; that makes sense now and I've found a schematic showing it. I should have realised though - this CB750P7 police model is a real hybrid and is a mix of K7/F2 parts. They have an essentially K7 engine but different carb jetting. Also has F front brakes and some other bits. Now I know it...

The clutch in my 78 police model does not match any that I can find in any manual. It has seven friction plates and six drive plates. All good so far, but one of the metal plates (third from inner) is made of two riveted together with some other material in between. It is 5mm thick. See photo...

Sounds like I should chase up some more then. Thanks for your reply.

My engine currently undergoing rebuild has most of these rubber inserts missing. I looked at the cost of replacements and after I picked myself up off the floor, decided not to worry about them. However I'm now curious why they are there - was it to stop some vibration that might ultimately...

Many thanks for the this. Got all I need now. G

Thanks hotdog; lots of good stuff in there. As for my question, the answer in that thread seems to be the opposite: don't worry about the knock pins and rubbers. So now I'm less sure. Might toss a coin.

I can possibly answer my own question now from an old post on another forum. The K4 to K8 and F engines had a mod to fit those dowels and rubber seals to prevent oil leaks. Someone who seems to be a guru says definitely don't leave the seals out but enlarge the holes in the Wiseco gasket to...