Hi All,
Looking for some help/advice, please. After re-shimming the valves on my GPz, I torqued the cam cap bolts back down only for 1 to keep turning I'm assuming the thread in the head has stripped and I'm looking fora solution. I'm thinking an insert would be possible, but the issue I see is the cam cap locating dowels uses the same hole as the securing bolt, so drilling out the thread for an insert will destroy the locating hole. Anybody had this problem and is there a solution ? I'm really hoping my head is not toast due to 1 stripped thread
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GPz cam bolt thread stripped
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GPz cam bolt thread stripped
"Racing is life. Anything before or after is just waiting" - Steve McQueen
Re: GPz cam bolt thread stripped
You can get an m6 helicoil in those dowelled camcap holes without damaging the locating hole.
I've done hundreds.
The stripped holes usually don't need drilling for the helicoil tap either.
I've done hundreds.
The stripped holes usually don't need drilling for the helicoil tap either.
Re: GPz cam bolt thread stripped
What Rob says... I've too done loads.
Kawasaki GPz750T, Kawasaki ZRX1100R, Kawasaki GPZ1000RX, H**** VF1000RG Rothmans, H**** VF500F2F, H**** CB1100RD, Suzuki GSX1100EFE, H**** XL125K2
Re: GPz cam bolt thread stripped
Brilliant Thanks guys
I already have a "Silverline" M6 helicoil kit, but the inserts are only 6mm deep (I think this is known as 1D ?). I presume I need longer inserts for the full length of the threaded portion of the hole - any recommendations on the length I need and suppliers ? Can I use the tap & insert tool from my kit with other manufacturers inserts ?
Apologies for the additional questions - I just want to make sure I get this right as it could be expensive if I get it wrong
Thanks.
Mark.
I already have a "Silverline" M6 helicoil kit, but the inserts are only 6mm deep (I think this is known as 1D ?). I presume I need longer inserts for the full length of the threaded portion of the hole - any recommendations on the length I need and suppliers ? Can I use the tap & insert tool from my kit with other manufacturers inserts ?
Apologies for the additional questions - I just want to make sure I get this right as it could be expensive if I get it wrong
Thanks.
Mark.
"Racing is life. Anything before or after is just waiting" - Steve McQueen
Re: GPz cam bolt thread stripped
You need minimum 2d.
Tap and insert tool will suit any M6 x 1mm coil inserts.
Tap and insert tool will suit any M6 x 1mm coil inserts.
Last edited by zed1015 on Tue Mar 05, 2024 6:07 pm, edited 1 time in total.
Re: GPz cam bolt thread stripped
I remember from years ago, the torque for these in the manual was wrong, too high. But I THINK it was the Z1100R manual, but might be worth checking as it's around the same era, just in case.
2006 ZRX1200R
1982 Z400J project
ex owner of Z1100R
GXI 2752 are you out there?
1982 Z400J project
ex owner of Z1100R
GXI 2752 are you out there?
Re: GPz cam bolt thread stripped
zed1015 wrote:You need minimum 2d.
Tap and insert tool will suit any M6 x 1mm coil inserts.
Thanks Zed105 - much appreciated
Mark.
"Racing is life. Anything before or after is just waiting" - Steve McQueen
Re: GPz cam bolt thread stripped
Kwackman wrote:I remember from years ago, the torque for these in the manual was wrong, too high. But I THINK it was the Z1100R manual, but might be worth checking as it's around the same era, just in case.
The Kwak workshop manual states 1.2kgm (9ft/lb) and it always feels too much when I'm torquing up the bolts. Think I'll just use a small ratchet and "feel" in future
Mark.
"Racing is life. Anything before or after is just waiting" - Steve McQueen
Re: GPz cam bolt thread stripped
Hi.
I have the later 83 Kawasaki Service manual showing 12 f.lbs for the caps. Torqued my B2 caps without issue. Trick is to start lower, maybe at 6 and go up in 2 lb increments applying the load slowly. Double click at any given torque to allow for settling. Decent torque wench is mega important with small measurements. I use a mechanical 1/4 drive Snap-on for all small stuff.
I have the later 83 Kawasaki Service manual showing 12 f.lbs for the caps. Torqued my B2 caps without issue. Trick is to start lower, maybe at 6 and go up in 2 lb increments applying the load slowly. Double click at any given torque to allow for settling. Decent torque wench is mega important with small measurements. I use a mechanical 1/4 drive Snap-on for all small stuff.
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