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Bracket Talk Bracket Talk Forum Tech Talk - by Abruzzi Weak spring after 40 runs??Go | New | Find | Notify | Tools | Reply | |
| Weak spring after 40 runs?? | Login/Join |
DRR Sportsman |
Pac 1248 spring , 1.80 int rocker, 1.75 exh rocker. Cam is .500imt .490exh . Anyone got any thoughts? Michael Frizie ET 2471 | ||
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| DRR Sportsman |
We had two sets break springs after 30 runs. Ours were set up too far from coil bind and cavitated. We went to a bigger spring and shimmed it up. Now we've gone to a more reasonable cam we probably don't need the crazy spring pressures. I recently found a crack on the exhaust rocker boss on #1. Leaking water. It's easy to go too far fixing it too. No matter how many times you paint over a shadow it's still there. | |||
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DRR Pro |
Was running the same spring. Had issues with unstable valve train and breaking. Changed to psi with exact same setup and problems gone... Mark Goulette Owner/Driver of the Livin' The Dream Racing dragster www.livinthedreamracing.com "Speed kills but it's better than going slow!" Authorized Amsoil Retailer | |||
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Bracket Talk Bracket Talk Forum Tech Talk - by Abruzzi Weak spring after 40 runs??
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