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| Valve Guides Whats Best https://www.ausmini.com/forums/viewtopic.php?f=2&t=94126 |
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| Author: | GundyGuy [ Mon Oct 31, 2016 5:33 pm ] |
| Post subject: | Valve Guides Whats Best |
Whats the best Valve Guide to use Cast Iron or Bronze |
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| Author: | TheMiniMan [ Mon Oct 31, 2016 5:35 pm ] |
| Post subject: | Re: Valve Guides Whats Best |
cast iron guides for normal valves bronze guides for stainless valves "Generally" |
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| Author: | drmini in aust [ Mon Oct 31, 2016 7:02 pm ] |
| Post subject: | Re: Valve Guides Whats Best |
The original cast iron guides but with k-liners fitted. Not cheap, but they give best heat transfer and run minimum clearance. Work fine with stock valves or SS ones. [edit] re bronze guides, I do run a set in my car. These current manganese bronze ones tend to shrink when fitted, definitely need a 9/32" reamer through them after fitting. And one of mine even then tried to grab an exhaust valve when first run, so I had to pull the head and ream them a second time. To be sure, to be sure... That was 50,000 miles ago (with 1.5:1 forged rockers) and they are still working fine. |
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