All Small Six 200 bronze valve guides

[clochard68]

Hello,

My head has cast in guides by the factory. I bought some steal guides for my small log head from rockauto. After visiting my machine shop today and speaking with the machinist I am considering using bronze valve guides. Has anybody a recommendation for bronze valves for a 200 log head?

Thanks.

 

[gb500]

See if they do 'K-line'. Basically ream out the existing cast iron guide. Insert a thin bronze liner and ream to std valve stem size. Quick and easy. Can even buy kits to do yourself.

Valve Guide-Liners: K-Line Guide Liners and Tooling

For nearly a quarter-century, K-Line Bronze Bullet brand valve guide liners have consistently maintained their top spot around the world as the industry standard in engine rebuilding based on quality of material and manufacture, efficiency of installation, and durability.

www.klineind.com

 

[clochard68]

Thanks GB500 for the link. Just yesterday I did knurl the guides and reamed them, I will post pictures in the small log head porting thread. Maybe the machinist knows about k line, I will definitely ask him.
One more question: Do the k line inlets need bigger clearances too, like a full bronze valve guide?
Have a good day

 

[bubba22349]

They are just a thin wall guide liner compared to the cast iron guides that you now have so most of the heads original cast iron valve guides stay intack. Here is a link to a picture of them they are a little cheaper when bought by the box of 100 too. This is for a set of 16. Best of luck. https://www.cylinderheadsupply.com/kl1841st.html

 

[clochard68]

Hello Bubba,

I just realized my reamer is also from k line, I bought it on cylinderheadsupply also. At the moment I am happy with how the knurling turned out, so I think I will stay with it till the next refresh of the head (hopefully not too soon haha). Thanks to all for your input.