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numbers may say one thing, but I think the best test is the =93seat=94 =
test. have first put the triples on a stock engine, then done quite a =
lot of other mods, I=92m going to say the seat test says do it.
and, I will add that my son has done very well in TR6 modified with this =
car.
like so many things, there are a ton of opinions. I=92ll stick with =
mine.
From: Michael Porter=20
Sent: Saturday, May 14, 2016 4:48 PM
To: Gene Holtzclaw ; dave n=20
Cc: Triumph 6 Pack=20
Subject: Re: [6pack] Tri carb set up
On 5/14/2016 2:28 PM, Gene Holtzclaw via 6pack wrote:
I still say study the numbers. Even a high performance TR engine can't =
flow what two Stromberg's can handle.
This is quite true, on the numbers from the flow bench of just the =
carburetors and just the head. I would say, however, that there's a =
small advantage in having each carburetor servicing two runners, instead =
of three, if only because the runners are straighter, and the pulses =
from each carb will be a bit sharper and better-defined with three =
carburetors instead of two. Flow numbers aren't everything--they =
matter, but so do mixture distribution and mixture uniformity. My guess =
is--because of the upper limits on flow of the head--there wouldn't be a =
great top-end power increase, but the low- and mid-range performance =
would probably improve some, and there would be slight torque =
improvement because patchy mixtures delivered to some cylinders would be =
reduced.
That said, the difference is going to be small, because of the port =
limitations of the cylinder head. Is the improvement worth the money? =
That's probably subjective. A hundred bucks a horsepower is pretty dear =
for the occasional driver. For the NASCAR guy, it's a bargain. =20
Dyno comparisons on the same engine would probably tell the tale.
Cheers. =20
--=20
Michael Porter
Roswell, NM
Never let anyone drive you crazy when you know it's within walking =
distance....
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<BODY dir=3Dltr bgColor=3D#ffffff text=3D#000000>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>numbers may say one thing, but I think the best test is the =
=93seat=94=20
test. have first put the triples on a stock engine, then done =
quite a lot=20
of other mods, I=92m going to say the seat test says do it.</DIV>
<DIV> </DIV>
<DIV>and, I will add that my son has done very well in TR6 modified with =
this=20
car.</DIV>
<DIV> </DIV>
<DIV>like so many things, there are a ton of opinions. I=92ll =
stick with=20
mine.</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dmdporter@dfn.com=20
href=3D"mailto:mdporter@dfn.com";>Michael Porter</A> </DIV>
<DIV><B>Sent:</B> Saturday, May 14, 2016 4:48 PM</DIV>
<DIV><B>To:</B> <A title=3Dmotrv8d@hotmail.com=20
href=3D"mailto:motrv8d@hotmail.com";>Gene Holtzclaw</A> ; <A =
title=3Ddave@ranteer.com=20
href=3D"mailto:dave@ranteer.com";>dave n</A> </DIV>
<DIV><B>Cc:</B> <A title=3D6pack@autox.team.net=20
href=3D"mailto:6pack@autox.team.net";>Triumph 6 Pack</A> </DIV>
<DIV><B>Subject:</B> Re: [6pack] Tri carb set up</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV class=3Dmoz-cite-prefix>On 5/14/2016 2:28 PM, Gene Holtzclaw via =
6pack=20
wrote:<BR></DIV>
<BLOCKQUOTE=20
cite=3Dmid:BY2PR15MB037695698DD1642F72A5D89EE1750@BY2PR15MB0376.namprd15.=
prod.outlook.com=20
type=3D"cite">
<DIV>
<DIV>I still say study the numbers. Even a high performance TR engine =
can't=20
flow what two Stromberg's can handle.</DIV>
<DIV> </DIV>
<DIV> </DIV></DIV></BLOCKQUOTE>This is quite true, on the numbers =
from the=20
flow bench of just the carburetors and just the head. I would say, =
however, that there's a small advantage in having each carburetor =
servicing two=20
runners, instead of three, if only because the runners are straighter, =
and the=20
pulses from each carb will be a bit sharper and better-defined with =
three=20
carburetors instead of two. Flow numbers aren't everything--they =
matter,=20
but so do mixture distribution and mixture uniformity. My guess=20
is--because of the upper limits on flow of the head--there wouldn't be a =
great=20
top-end power increase, but the low- and mid-range performance would =
probably=20
improve some, and there would be slight torque improvement because =
patchy=20
mixtures delivered to some cylinders would be reduced.<BR><BR>That said, =
the=20
difference is going to be small, because of the port limitations of the =
cylinder=20
head. Is the improvement worth the money? That's probably=20
subjective. A hundred bucks a horsepower is pretty dear for the =
occasional=20
driver. For the NASCAR guy, it's a =
bargain. =20
<BR><BR>Dyno comparisons on the same engine would probably tell the=20
tale.<BR><BR><BR>Cheers. <BR><PRE class=3Dmoz-signature =
cols=3D"72">--=20
Michael Porter
Roswell, NM
Never let anyone drive you crazy when you know it's within walking =
distance....</PRE></DIV></DIV></DIV></BODY></HTML>
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