[Fot] Spitfire 1300 Valve Springs

[Scott Janzen]

I run the same Isky springs in my Gt6. Have net valve lift of 0.54” with 1.8:1 rockers.
They are a lower spring pressure than some- about 65 seat and 240-250 open. I do find that they lose about 20 lb spring pressure after a few weekends, so set them high to begin with.
Engine revs to about 7300.  Not sure if you might want more spring pressure with more revs. Best to ask the cam designer!
Scott

Sent from my iPhone

> On Aug 24, 2019, at 12:57 PM, Mike Harmuth via Fot <fot at autox.team.net> wrote:
> 
> Hi Brad, I just ordered a set directly from Isky yesterday, they had them in stock. I'm running an APT BK-74 cam.  David, at APT, also has springs as well and BP Northwest has springs that are OK up to 0.500 lift.
> 
> Isky PN
> wwe-005 outer 
> sp-116 inner
> 
> mike h
> 
>> On Sat, Aug 24, 2019 at 11:29 AM Brad Eells via Fot <fot at autox.team.net> wrote:
>> Hello Amici,
>> 
>> Wondering if anyone knows a ready source for 1300 valve springs. I'm running a Kastner A10a cam.
>> 
>> I've been working with Ted Schumacher but we're having trouble finding the correct diameter springs for old school competition accessory alloy valve keepers.
>> 
>> Does anyone have a ready source for a spring set?
>> 
>> Thanks!
>> 
>> 
>> Brad Eells
>> Chino CA
>> #72 FP 1969 Triumph Spitfire Mk3
>> #35 DP 1962 Triumph TR4
>> 1965 Triumph TR4A IRS...for the road!
>> 
>> 
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