Subject: [TR] GT6 Cabriolet

From: [email-masked]
Date: Fri, 27 Feb 2015 17:48:03 +0000 (UTC)

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Hi folks.=20
=C2=A0=20
I have a couple more questions on the GT6 I was hoping for some wisdom here=
.=20
=C2=A0=20
1- I have the choice of using a '73 '3 rail' trans that came with the GT6 c=
hassis or a '78 'Marina' trans from my '78 Spitfire donor car. Any recommen=
dations? I am planning on 'massaging' the 2.0 liter inline 6 to about 130 H=
P or so. I understand both trannies are equivalent in=C2=A0handling engine =
power (apparently not very) :)=20
=C2=A0=20
2- I also understand the diffs are pretty much the same as far as power han=
dling. I plan on getting and overdrive, so is the 3.89 ratio from the Spitf=
ire is what the factory used in the US. But, apparently the German GT6s wit=
h OD used the US non OD ratio, the 3:27, maybe that is better for a more re=
laxed cruise? Not planning on drag racing much, but also don't want a car t=
hat cant get out of its own way.=20

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<html><body><div style="font-family: Arial; font-size: 12pt; color: #000000"><DIV>Hi folks.<BR></DIV>
<DIV>&nbsp;</DIV>
<DIV>I have a couple more questions on the GT6 I was hoping for some wisdom here.</DIV>
<DIV>&nbsp;</DIV>
<DIV>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&nbsp;handling engine power (apparently not very) :) </DIV>
<DIV>&nbsp;</DIV>
<DIV>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.</DIV></div></body></html>
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** [email-masked] **

Archive: http://www.team.net/archive

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From: [email-masked]
Date: Fri, 27 Feb 2015 13:52:02 -0600 (CST)

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<div style=3D"FONT-FAMILY: Arial; COLOR: rgb(0,0,0); FONT-SIZE: 12px"><div>=
spit and GT6 tranny are not directly swapable.... input shafts are differen=
t.... <br />swapping shafts would require swapping laygears, which requires=
 swapping all gears.....<br />just go with the 3rail.<br />You CAN swap the=
 shifter mechanisms...but not really worth the effort or trying to collect =
all the right parts.<br />Late Spit 1500 single rails came with a j-type o/=
d...doesn't 'bang' as hard shifting, uses lower currents to switch the sole=
noid, simpler wiring.<br />GT6 used a d-type. needs a relay and different w=
iring<br />I just ever so slightly slip my clutch on d-type o/d switch out =
...no big deal.&nbsp; FIS6 (Fuel Injected Spit6) is running around 136 hp<b=
r />http://www.teglerizer.com/triumphstuff/spit6whiteyFI/spit6whiteyFI_full=
engine1.html<br /><br />Has around 15K+ on it now, including&nbsp; 3 long r=
oad trips that included track laps (sissy laps but still drove the tracks a=
t speeds we weren't suppose to) <br />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 tra=
nny...requires a full tear down though to swap shafts.<br /><br /><br />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.<br />The 3.27 carrier is the weakest of all the dif=
fs (smallest carrier diameter...thinner walls carrying the ring gear)<br />=
Getting off the line in the GT6 with a 3.27 is sluggish. Hence the 3.89 and=
 o/d.<br />There is a 3.63 avail, but matching a speedo is a pain (revs per=
 mile errors) <br /></div><div>&nbsp;</div><div>&nbsp;</div><span>Paul Tegl=
er<br />[email-masked]<br />www.teglerizer.com</span><div>&nbsp;</div>=
<div style=3D"border-top:1px solid #bcbcbc;margin:5px 0px;"></div><span sty=
le=3D"font-size:12;font-family:arial;color:#000000;">On 02/27/15, <span>jmb=
[email-masked]</span> wrote:</span><div>&nbsp;</div><div style=3D"font-siz=
e:12;font-family:arial;color:#000000;"><div style=3D"font-family: Arial; fo=
nt-size: 12pt; color: #000000"><div>Hi folks.<br /></div><div>&nbsp;</div><=
div>I have a couple more questions on the GT6 I was hoping for some wisdom =
here.</div><div>&nbsp;</div><div>1- I have the choice of using a '73 '3 rai=
l' 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 eq=
uivalent in&nbsp;handling engine power (apparently not very) :) </div><div>=
&nbsp;</div><div>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 rat=
io from the Spitfire is what the factory used in the US. But, apparently th=
e German GT6s with OD used the US non OD ratio, the 3:27, maybe that is bet=
ter for a more relaxed cruise? Not planning on drag racing much, but also d=
on't want a car that cant get out of its own way.</div></div><br /><hr size=
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</div>

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