[TR] Euro or other taller differential needed

[Jerry Van Vlack]

The TVR's with TR 6 rear suspensions used the 3.45 gears.
JVV

----- Original Message ----- 
From: "Jamie Palmer" <tr6driver at earthlink.net>
To: <6pack at autox.team.net>; "triumphs" <triumphs at autox.team.net>
Sent: Tuesday, September 28, 2010 4:12 PM
Subject: [TR] Euro or other taller differential needed


> RiffRAF Racing is in need of a TR6 differential with a taller rear end 
> ratio (i.e. numerically smaller) than the stock 3.7:1 US setup.  One 
> possibility would be the 3.45:1 from a PI car.  We're open to other 
> suggestions, but since our car is supposed to be worth no more than $500 
> by the rules, some of the more common (for example, the GoodParts 
> conversions) are out of our reach.
>
> Anyone got a Euro diff around?
>
> The car is at max RPM way early on straights.  For example, we were at the 
> rev limit for the entire front straight at Roebling Road, and were 
> actually driving the entire course in 4th gear.  Even at Sebring last 
> weekend, when our engine was entirely off song, we could hit max RPM 
> really quickly.
>
> An overdrive would push the car past the race series value limit, and 
> while taller tires would help, they would also hurt the handling 
> considerably (we're currently using 205/50-15 Falken RT615K's on stock 
> wheels due to treadwear rules and wheel cost rules).
>
> All suggestions are appreciated...thanks.
>
> Jamie Palmer
> RiffRAF Racing
> 1975 TR6 ChumpCar