Subject: Re: [Fot] GT6 carburetors

From: Jason Ostrowski via Fot <[email-masked]>
Date: Wed, 9 Apr 2025 15:03:25 -0500

No.
The GT6 always was sold with the 1.50 strombergs.
The Only difference in GT6 carbs relates to style for various emission requirements. 
And contrary to popular belief the 1:5” set of carbs (for all GT6 racecars) are the only style allowed in both Modern and Vintage rules without some kind of corresponding class change or weight penalty.
Jason Ostrowski 
Friendly Ghost Racing 
1969 GT6+  racecars
Sent from my iPhone

> On Apr 9, 2025, at 1:55 PM, DENNIS DELAP via Fot <[email-masked]> wrote:
> 
> A M I C I
> I’ve got a question for the GT6 folks in the group. Was the larger 1 3/4” carburetor fitted to the GT6 towards the end of its run?
> Thanks 
> Dennis 
> Sent from my iPhone
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From: Scott Janzen via Fot <[email-masked]>
Date: Wed, 9 Apr 2025 21:30:44 -0400

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Wow, that weight penalty for an alternate t=
ransmission is brutal!<div>Not that I=E2=80=99m racing with svra anyway.<br i=
d=3D"lineBreakAtBeginningOfSignature"><div dir=3D"ltr">Sent from my iPhone</=
div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Apr 9, 2025, at 7:57=E2=
=80=AFPM, Jason Sukey via Fot &lt;[email-masked]&gt; wrote:<br><br></blo=
ckquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<div dir=3D=
"ltr"><div>Hi Jason,</div><div><br></div>SVRA explicitly allows larger SU ca=
rbs, no specified classing or weight penalty.<div><br></div><div>Triple Webe=
rs do get bumped up to DP.</div><div><br></div><div><br></div><div><div>&lt;=
image.png&gt;</div><br></div><div><div><br></div><div>Jason</div></div><div>=
<br></div><div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"lt=
r" class=3D"gmail_attr">On Wed, Apr 9, 2025 at 6:05=E2=80=AFPM Jason Ostrows=
ki via Fot &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">fot@a=
utox.team.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex">No.<br>
The GT6 always was sold with the 1.50 strombergs.<br>
The Only difference in GT6 carbs relates to style for various emission requi=
rements. <br>
And contrary to popular belief the 1:5=E2=80=9D set of carbs (for all GT6 ra=
cecars) are the only style allowed in both Modern and Vintage rules without s=
ome kind of corresponding class change or weight penalty.<br>
Jason Ostrowski <br>
Friendly Ghost Racing <br>
1969 GT6+&nbsp; racecars<br>
Sent from my iPhone<br>
<br>
&gt; On Apr 9, 2025, at 1:55 PM, DENNIS DELAP via Fot &lt;<a href=3D"mailto:=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; wrote:<br>
&gt; <br>
&gt; =EF=BB=BFA M I C I<br>
&gt; I=E2=80=99ve got a question for the GT6 folks in the group. Was the lar=
ger 1 3/4=E2=80=9D carburetor fitted to the GT6 towards the end of its run?<=
br>
&gt; Thanks <br>
&gt; Dennis <br>
&gt; Sent from my iPhone<br>
&gt; _______________________________________________<br>
&gt; <a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked].=
net</a><br>
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nk">http://www.fot-racing.com</a><br>
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&gt; <br>
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</blockquote></div>
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From: Jason Ostrowski via Fot <[email-masked]>
Date: Wed, 9 Apr 2025 21:34:58 -0500

SVRA actually did a pretty good job with their current classification of the GT6. The choices they make in the classification compared to  other cars (in the same class) favor the GT6. 
Why? Because SVRA references the 1967 SCCA regulations for class approval for group 3. 

Original SCCA classification had the GT6 in E production where it was particularly dominate. Not many cars were prepared for National SCCA competition in the first few years of the new 6 cylinder beast. (Like less than 10 quality SCCA cars  until the 1969 season).
At the end of 1969 and after a banner year of regional and national wins, the car was reclassified after the ARRC at Daytona. 
So for the start of the 1970 season- and ever after,  the GT6 was in D production. 

With the most general sense of reason, and for the sake of a true and accurate Base for “Period Correct classification”….  
the Triumph GT6 is a D production car and it should run prepared to at or about the 1972 SCCA rules as such. 
Most importantly; with a stock appearing manifold with no more than 2 throats. Stromberg or S.U. 1.5 “ to 1.75” 
To Jason Sukey’s point out… no penalty for an enlarged size of a dual carb set-up. (I’m all in on that footnote)

As far as a triple Webber set-up; with a custom manifold. 
That is a totally different scenario and  was never on these cars in the in the first decades of competition. (Nice try, but Sorry Scott your GT6 didn’t have those Webers on it when it was campaigning for the SCCA DP national championship).
The only exception would be the Dolan’s group 44 car which actually ran in GTU under IMSA rules at the hand of the Great Ted Schumacher!
And, with every trick thrown at it; It’s simply a bump in class. 
Intake Manifold modification, and or extra carbs. = C Production
Lots of other mods = C production
IMSA GTU type GT6= C prod.
A modern E production SCCA well built car  like Anthony Parker’s = C production.
For the record, I don’t care what type of GT6 you build or race.
I love them all. 
But if we are to be fair to the original cars, certain modifications should be evaluated. 
I see 2 types of GT6 race cars that  I’d like to campaign .
1) almost period correct = DP
2) unlimited =CP.
Any type of GT6 is eligible to win the Kastner cup.
 But All GT6 entries are eligible for a public stoning if they are found to be slow.

Jason Ostrowski 
Friendly Ghost Racing 
1969 Triumph GT6+ racecars

Sent from my iPhone

> On Apr 9, 2025, at 5:41 PM, Scott Janzen <[email-masked]> wrote:
> 
> That may be true- the penalty bit, but I’ve been running triple Weber 40s in Vintage for years. Even with that, a well prepared Tr4 is at least a match for my car. I run the Webers because once they’re set up they’re bulletproof, and I have to admit, I love the way they look.
> I’m not sure from a performance standpoint they offer a huge edge.
> 
> Sent from my iPhone
> 
>> On Apr 9, 2025, at 6:24 PM, Jason Ostrowski via Fot <[email-masked]> wrote:
>> 
>> No.
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/[email-masked]
>> 
>>

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From: Scott Janzen via Fot <[email-masked]>
Date: Thu, 10 Apr 2025 07:58:20 -0400

Great history!  I know mine never ran that way back in the day. It came to me with twin SUs.
Sent from my iPhone

> On Apr 9, 2025, at 10:35 PM, Jason Ostrowski <[email-masked]> wrote:
>