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Heymow - Lawnmower Racing Forum
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Briggs OHV & Vanguard
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Topic:
Heavier single valve spring?
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Topic: Heavier single valve spring? (Read 7431 times)
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Benson1
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Heavier single valve spring?
«
on:
June 27, 2016, 10:16:30 pm »
Hi all I am looking to see if anyone makes a single heavier spring don't want to run the doubles. I searched and read most all the archived posts. Lots of them where pretty old so Im asking the question fresh. Oops 35 vangaurd motor.
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Gui961
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Re:
«
Reply #1 on:
June 28, 2016, 10:33:34 pm »
why a single spring. stock engine . mild or wild .
cheaper way is the ec kit. good for mild engine. you could use only the outter if the engine is mostly stock
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Guillaume Mercier-Roy
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Benson1
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Re: Heavier single valve spring?
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Reply #2 on:
June 29, 2016, 05:03:38 pm »
I would say its between mild and wild deff not stock. Not concerned about price really just didn't wanna run the double spring I think it's over kill and I don't wanna be ripping out studs.
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Gui961
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Re:
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Reply #3 on:
June 29, 2016, 06:46:38 pm »
well unless you want to only turn it to less than 6000rpm . you will need heavy dual spring. you wont strip or break a stud in a vanguard unless you have clearance problem . even the ec dual spring float at 8k ...
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Guillaume Mercier-Roy
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rotten ron
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Re: Heavier single valve spring?
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Reply #4 on:
July 04, 2016, 10:39:50 pm »
Gui---your valves are too heavy,we got 12000 with those springs with 48 pounds seat pressure but the hollow cams would break and destroy the engine
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Gui961
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Re:
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Reply #5 on:
July 05, 2016, 08:45:37 pm »
yea but ec spring are only 40lb new without shim. and 38lb after a few race . stock 23hp steel valve cheatah cam float at 8k
On my stuff i use something else for spring, biller cam and titanium valve so this is not a issue at all
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Guillaume Mercier-Roy
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cycloneracer
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Re: Heavier single valve spring?
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Reply #6 on:
July 06, 2016, 12:16:50 am »
Reinforce your head and run the double spring. You will be happy.
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Paul Krueger
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Gui961
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Re:
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Reply #7 on:
July 06, 2016, 12:32:54 pm »
never had problem with the vanguard. it wont pull the rocker boss like the single and twin intek...
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Guillaume Mercier-Roy
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Heymow - Lawnmower Racing Forum
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Topic:
Heavier single valve spring?