cam caps

[wobblegob]

Right boys got a gsxr11L motor with 2 bodged inlet cam caps, they've been took out to 8mm fine by the looks of it. Now I have another head sat here for mock up. I know that they are line bored. But can I realistically use the caps off the spare head. Opinions chaps or options

[Gixer1460]

General advice is no . . . . . but IF they fit and IF the cam turns absolutely without effort . . . . . you could risk it! But proper job would use a Timesert as there looks to be enough meat left to cut a insert's thread and use proper M7 insert!

[clivegto]

Yes give me a ring and I'll tell you how to do it 

[bunk]

If you had a bore gauge that went to tenths you could try. 

 

Or give it to a pakistani, their YT videos look promising !

[Fazz711]

General advice is not to but have had to in the past and had no problems.

Edited February 2, 2025 by Fazz711
Crap spelling

[spiderpig]

It's been done loads of times, just plastiguage it. 

Other option to an insert, is cut it off and make up a bracket that bolts down with the cam caps bolts. 

[Upshotknothole]

APE sells 8mm valve cover bolts, but only in sets of 8. Might give them or the local distributor a ring and see if you can get a mixed set.

[spiderpig]

Just now, Upshotknothole said:

APE sells 8mm valve cover bolts, but only in sets of 8. Might give them or the local distributor a ring and see if you can get a mixed set.

I couldn't find them the last time I was looking on their site 

[Upshotknothole]

Just now, spiderpig said:

I couldn't find them the last time I was looking on their site 

http://gsxrzone.com/vcbolts.html

[george 1100]

Helicoil all the cam caps. Job permanently done

[Joseph]

[spiderpig]

10 hours ago, Joseph said:

That's what I was talking about 

[Joseph]

17 minutes ago, spiderpig said:

That's what I was talking about 

I saved that photo from a topic on here. It's done by an OSSer but can't remember who

[wobblegob]

18 hours ago, Joseph said:

Isn't this something dave dunlop had in the other week

 

[Joseph]

1 hour ago, wobblegob said:

Isn't this something dave dunlop had in the other week

 

Maybe but this job in particular isn't Daves, if i do a search i might be able to trace the member down

[wobblegob]

59 minutes ago, Joseph said:

Maybe but this job in particular isn't Daves, if i do a search i might be able to trace the member down

Dave didn't do it but he had one in that had been done like that

[Ivan]

Thats a nice solution 

[Nik]

A mate had the same problem. Caps threaded to M8, but a bit worn. He filled the hole with JB Weld's metal epoxi, drilled it and fitted a helicoil. Worked fine. 

[gray711]

Had the same issue @ 20 years back. Got a few of these off someone on the old site for a similar fix, no idea who. Only found them when having a sort out earlier. 

[Oilyspanner]

Get a v coil or helicoil kit which is pretty cheap. They come with a suitable drill, 8.3mm from memory,  a tap for the 7mm vcoil/helicoil, the tool to screw the coil in and the steel threads themselves  - once done you can forget about them, way stronger than standard. Timeserts are great too. Cam cover threads strip even if you're careful. 

[wobblegob]

18 hours ago, Oilyspanner said:

Get a v coil or helicoil kit which is pretty cheap. They come with a suitable drill, 8.3mm from memory,  a tap for the 7mm vcoil/helicoil, the tool to screw the coil in and the steel threads themselves  - once done you can forget about them, way stronger than standard. Timeserts are great too. Cam cover threads strip even if you're careful. 

Got a 7mn helicoil kit but somebody has drilled and tapped to 8mm metric fine by the looks of it and there's not enough meat to get the 7 helicoil in

[wobblegob]

Got 7mm timeserts coming woohoo

[wobblegob]

All sorted now all the cam cover mounts timeserted

[wraith]

You can get the m7x1.0 kits that has enough helicoil inserts to do all of them for about £10 off that site 

[wobblegob]

7 hours ago, wraith said:

You can get the m7x1.0 kits that has enough helicoil inserts to do all of them for about £10 off that site 

It had already been tapped out to m8 fine thread so a bit of acunt if a job, I have m7 helicoils but wasn't enough meat left to put them in. That's why I wanted timeserts. Anyway all sorted now.