[TR] GT6 Cabriolet

[ptegler]

...was just talking the interchangeability of some parts...and some not.
What year GT6? some earlier models used a smaller axle and driveshaft 
flange size you might have to swap as well

ptegler

On 2/28/2015 2:01 AM, Joao Simoes wrote:
> Thanks so much for the responses. Paul, I have read your website with 
> interest. Thanks for the response!
> My GT6 donor chassis has the 3rail trans and no OD. Which I assume is 
> the 3:27, so you are saying the stock GT6 was sluggish off the line?
> If so, I can the use the 3.89 diff that came with my 78 Spitfire body 
> donor, right?
> I have said Spitfire's trans too, did you say I could swap its shift 
> mechanism onto the GT6 's? Why would i do that? Is it better?
>
>
>
> Take care,
>
> Joao
>
> On Feb 27, 2015, at 2:52 PM, ptegler at verizon.net 
> <mailto:ptegler at verizon.net> wrote:
>
>> spit and GT6 tranny are not directly swapable.... input shafts are 
>> different....
>> swapping shafts would require swapping laygears, which requires 
>> swapping all gears.....
>> just go with the 3rail.
>> You CAN swap the shifter mechanisms...but not really worth the effort 
>> or trying to collect all the right parts.
>> Late Spit 1500 single rails came with a j-type o/d...doesn't 'bang' 
>> as hard shifting, uses lower currents to switch the solenoid, simpler 
>> wiring.
>> GT6 used a d-type. needs a relay and different wiring
>> I just ever so slightly slip my clutch on d-type o/d switch out ...no 
>> big deal.  FIS6 (Fuel Injected Spit6) is running around 136 hp
>> http://www.teglerizer.com/triumphstuff/spit6whiteyFI/spit6whiteyFI_fullengine1.html
>>
>> Has around 15K+ on it now, including  3 long road trips that included 
>> track laps (sissy laps but still drove the tracks at speeds we 
>> weren't suppose to)
>> Now you CAN get j-type o/d shafts for the three rail....so you could 
>> install a j-type on your three rail GT6 tranny...requires a full tear 
>> down though to swap shafts.
>>
>>
>> The 3.27 diff and a non-o/d final drive ratio is nearly identical to 
>> the 3.89 rear and o/d switch on.
>> The 3.27 carrier is the weakest of all the diffs (smallest carrier 
>> diameter...thinner walls carrying the ring gear)
>> Getting off the line in the GT6 with a 3.27 is sluggish. Hence the 
>> 3.89 and o/d.
>> There is a 3.63 avail, but matching a speedo is a pain (revs per mile 
>> errors)
>> Paul Tegler
>> ptegler at verizon.net <mailto:ptegler at verizon.net>
>> www.teglerizer.com <http://www.teglerizer.com>
>> On 02/27/15, jmbs46 at comcast.net <mailto:jmbs46 at comcast.net> wrote:
>> Hi folks.
>> I have a couple more questions on the GT6 I was hoping for some 
>> wisdom here.
>> 1- I have the choice of using a '73 '3 rail' trans that came with the 
>> GT6 chassis or a '78 'Marina' trans from my '78 Spitfire donor car. 
>> Any recommendations? I am planning on 'massaging' the 2.0 liter 
>> inline 6 to about 130 HP or so. I understand both trannies are 
>> equivalent in handling engine power (apparently not very) :)
>> 2- I also understand the diffs are pretty much the same as far as 
>> power handling. I plan on getting and overdrive, so is the 3.89 ratio 
>> from the Spitfire is what the factory used in the US. But, apparently 
>> the German GT6s with OD used the US non OD ratio, the 3:27, maybe 
>> that is better for a more relaxed cruise? Not planning on drag racing 
>> much, but also don't want a car that cant get out of its own way.
>>
>> ------------------------------------------------------------------------
>>
>>
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-- 
Paul Tegler ptegler at verizon.net www.teglerizer.com
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