Subject: Re: [Fot] Diff ratio for Road America

From: Brian Schirano <[email-masked]>
Date: Sun, 28 Aug 2016 07:26:42 +0000 (UTC)

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never been to Elkhart, but in my GT, sounds like a similar build, I just sw=
itched from a 4:11 to 3:89 this year and for the 30 minutes it ran (differe=
nt story) it was the right ratio for MOSORT Canada=C2=A026A GT6+, 28 TR6Bri=
an Schirano
585-305-0349 Cell=C2=A0
[email-masked]

      From: David Amys <[email-masked]>
 To: [email-masked]=20
 Sent: Sunday, August 28, 2016 2:34 AM
 Subject: [Fot] Diff ratio for Road America
  =20
Need advice on which diff to run at Elkhart. Our first time out. GT6 with m=
ild motor.=C2=A0 We have two diffs. 3:89 welded and 3:26 stock rebuild. Rev=
 limiter set at 6,000.
Thanks
Dave and Alex

Sent from my iPhone
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oo.com

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<html><head></head><body><div style=3D"color:#000; background-color:#fff; f=
ont-family:times new roman, new york, times, serif;font-size:16px"><div dir=
=3D"ltr" id=3D"yui_3_16_0_ym19_1_1472316724593_24553"><span id=3D"yui_3_16_=
0_ym19_1_1472316724593_24552">never been to Elkhart, but in my GT, sounds l=
ike a similar build, I just switched from a 4:11 to 3:89 this year and for =
the 30 minutes it ran (different story) it was the right ratio for MOSORT C=
anada</span></div><div></div><div id=3D"yui_3_16_0_ym19_1_1472316724593_244=
36">&nbsp;</div><div class=3D"signature" id=3D"yui_3_16_0_ym19_1_1472316724=
593_24440"><div id=3D"yui_3_16_0_ym19_1_1472316724593_24439">26A GT6+, 28 T=
R6</div>Brian Schirano<br>585-305-0349 Cell&nbsp;<br>[email-masked]</d=
iv><div class=3D"qtdSeparateBR" id=3D"yui_3_16_0_ym19_1_1472316724593_24497=
"><br><br></div><div class=3D"yahoo_quoted" id=3D"yui_3_16_0_ym19_1_1472316=
724593_24612" style=3D"display: block;">  <div style=3D"font-family: times =
new roman, new york, times, serif; font-size: 16px;" id=3D"yui_3_16_0_ym19_=
1_1472316724593_24611"> <div style=3D"font-family: HelveticaNeue, Helvetica=
 Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id=3D=
"yui_3_16_0_ym19_1_1472316724593_24610"> <div dir=3D"ltr" id=3D"yui_3_16_0_=
ym19_1_1472316724593_24609"> <font size=3D"2" face=3D"Arial" id=3D"yui_3_16=
_0_ym19_1_1472316724593_24613"> <hr size=3D"1"> <b><span style=3D"font-weig=
ht:bold;">From:</span></b> David Amys &lt;[email-masked]&gt;<br> <b><spa=
n style=3D"font-weight: bold;">To:</span></b> [email-masked] <br> <b><s=
pan style=3D"font-weight: bold;">Sent:</span></b> Sunday, August 28, 2016 2=
:34 AM<br> <b><span style=3D"font-weight: bold;">Subject:</span></b> [Fot] =
Diff ratio for Road America<br> </font> </div> <div class=3D"y_msg_containe=
r" id=3D"yui_3_16_0_ym19_1_1472316724593_24614"><br>Need advice on which di=
ff to run at Elkhart. Our first time out. GT6 with mild motor.&nbsp; We hav=
e two diffs. 3:89 welded and 3:26 stock rebuild. Rev limiter set at 6,000.<=
br>Thanks<br>Dave and Alex<br><br><br>Sent from my iPhone<br>______________=
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t" href=3D"mailto:[email-masked]">[email-masked]</a><br><br><a href=
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From: Tony Drews <[email-masked]>
Date: Sun, 28 Aug 2016 08:21:47 -0500

3.89 will probably be borderline depending on engine power.  My TR4 
with 3.8 gearing can run a bit over 6000 at the end of the straights 
there.  Less aerodynamic I'd think, but possibly more power.

Regards, Tony

At 07:34 PM 8/27/2016, David Amys wrote:
>Need advice on which diff to run at Elkhart. Our first time out. GT6 
>with mild motor.  We have two diffs. 3:89 welded and 3:26 stock 
>rebuild. Rev limiter set at 6,000.
>Thanks
>Dave and Alex
>
>
>Sent from my iPhone
>Donate: http://www.team.net/donate.html
>Forums: http://www.team.net/forums
>Unsubscribe/Manage: 
>http://autox.team.net/mailman/options/fot/[email-masked]

---

From: Tony Drews <[email-masked]>
Date: Sun, 28 Aug 2016 08:57:01 -0500

BTW, I run 15" wheels with 60 series tires.  If you run smaller 
wheels, you'd want an even taller rear end gear...

Cheers, Tony

At 08:21 AM 8/28/2016, Tony Drews wrote:
>>Need advice on which diff to run at Elkhart. Our first time out. 
>>GT6 with mild motor.  We have two diffs. 3:89 welded and 3:26 stock

---

From: Jason Ostrowski <[email-masked]>
Date: Sun, 28 Aug 2016 19:09:09 -0500

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Your welded 3;89 is your best option for RA. you will be best served using
3rd and 4th gear.
You can leave the rev Limiter where it is for your first sessions.
No need to go more the than 6000 in the beginning.
Eventually you will need at least 7000RPMs at Road America.
Up at the sharp end of the grid even 8000 won't get you on the podium.
I'll be up there with the cheetah that weekend.
We paddock in the north paddock near the Lester garages if you need any
help.
Looking forward to seeing your car.
Jason Ostrowski
Friendly Ghost Racing
1969 Triumph GT6+ Racecars

On Sat, Aug 27, 2016 at 7:34 PM, David Amys <[email-masked]> wrote:

> Need advice on which diff to run at Elkhart. Our first time out. GT6 with
> mild motor.  We have two diffs. 3:89 welded and 3:26 stock rebuild. Rev
> limiter set at 6,000.
> Thanks
> Dave and Alex
>
>
> Sent from my iPhone
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/jason@
> multivintage.com
>
>
>

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<div dir=3D"ltr"><div>Your welded 3;89 is your best option for RA. you will=
 be best served using 3rd and 4th gear. </div><div>You can leave the rev Li=
miter where it is for your first=C2=A0sessions.</div><div>No need to go mor=
e the than 6000 in the beginning.</div><div>Eventually you will need at lea=
st 7000RPMs at Road America.</div><div>Up at the sharp end of the grid even=
 8000 won&#39;t=C2=A0get you=C2=A0on the podium.</div><div>I&#39;ll be up t=
here with the cheetah=C2=A0that weekend.</div><div>We paddock in the north =
paddock near the=C2=A0Lester garages if you need any help.</div><div>Lookin=
g forward to seeing your car.</div><div>Jason Ostrowski</div><div>Friendly =
Ghost Racing</div><div>1969 Triumph GT6+ Racecars=C2=A0=C2=A0</div></div><d=
iv class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Sat, Aug 27, 201=
6 at 7:34 PM, David Amys <span dir=3D"ltr">&lt;<a href=3D"mailto:damys@char=
ter.net" target=3D"_blank">[email-masked]</a>&gt;</span> wrote:<br><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #cc=
c solid;padding-left:1ex">Need advice on which diff to run at Elkhart. Our =
first time out. GT6 with mild motor.=C2=A0 We have two diffs. 3:89 welded a=
nd 3:26 stock rebuild. Rev limiter set at 6,000.<br>
Thanks<br>
Dave and Alex<br>
<br>
<br>
Sent from my iPhone<br>
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</blockquote></div><br></div>

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