[Fot] Opinion needed on GT6 pistons

[R. John Lye]

I can second the quality control for Venolia pistons.  Several years ago, we
did a group buy of several sets of TR-4 pistons from Venolia.  I weighed
them when they got in, and matched them to sets based on weight.  Even
over the five sets (I think it was five, anyway), they were all very close. 
By hand picking them, though, we were able to get all sets almost spot on. 
 
John

On Mon, 04 Jan 2016 08:52:27 -0500, Bill Tobin  wrote:

       Scott, I think they are more than double that but you get what 
you pay for. 
I weighed all my Venolias when I got them new and they were all dead 
equal; right on their spec. 
I have a more conservative redline in the TR6, 6000, but it will easily 
go beyond that. 
Happy New Year everyone. 
Bill

       ----- Original Message -----
From: Scott Janzen
To: Spitfire Racing
Cc: FOT list
Sent: Monday, January 04, 2016 8:16 AM
Subject: Re: [Fot] Opinion needed on GT6 pistons
 
I've had a set of Venolia Pistons in my race GT6 for probably eight 
years. Just measured the skirt dimension against an unused spare-   
0.6/1,000 of wear, max.  They'll be going back in the engine again 
with new rings. My recollection is they are about $75 each. 
My routine redline is 7,000 rpm. 

Sent from my mobile device 

On Jan 4, 2016, at 5:07 AM, Spitfire Racing  wrote:

I did an engine rebuild for a GT-6 owner on his occasional track car 
and against my recommendation he wanted the cheaper option of County 
pistons. I had suggested using either J&E; Aries or Venolia forged 
pistons but he didn’t want to “spend that much”. I found their 
weights to be less uniform but in all honesty to the best of my 
awareness the engine is still running. These are made in China and 
given how nervous they made me, I don’t think I would do another 
build using them. The builder is always held responsible for any 
failure regardless of cause. When I build a Spitfire engine using 
proper forged pistons we dyno test at 7800. I would be nervous doing 
that with County pistons. 
 
 
I will say I admit to having general misgivings about anything made in 
China but that’s based on experience. Why risk your reputation and 
the expense of a total build by using cheap pistons. It’s a false 
economy. I dreaded every time the phone rang for a month after 
delivering the car, but in this instance they seemingly met the 
requirement. It takes years to build a reputation but it can be lost in 
mere minutes. 
 
 
County pistons may work for street car applications but are a risky 
choice for the rigors of racing. Spinning a bearing indicates either 
poor clearances or an oiling deficiency. A proper rebuild should check 
and correct only everything! Don’t assume the one problem you find is 
the only problem. Shortcuts predictably end up in expensive disaster. 
 
I’ll step off the soap box now!
 
Choose wisely!
 
 
Russ Moore
 
Spitfire #49
 
 
From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of Jim Gray
Sent: Sunday, January 03, 2016 9:58 PM
To: 'FOT list'
Subject: [Fot] Opinion needed on GT6 pistons
 
 
I’m rebuilding and engine for a fellow club member and need to get an 
opinion on County pistons. 
 
The last “ rebuild” only lasted minutes on track until it spun a 
bearing. The pistons were new
 
for the last build. Since I have no experience with the County brand 
I’d like to know from the collective
 
if they are descent racing pistons. 
 
Thanks as always,
 
Jim g
 
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--
Thanks,
John

rjl at gt-classics.com
 

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