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[Fot] 89MM piston question

Subject: [Fot] 89MM piston question
From: billdentin at aol.com (Bill Dentinger)
Date: Thu, 6 Sep 2018 11:57:10 -0400
References: <CABFvdWv13Th2f+hZFCndcznWu0Vei48H7khi1xKU5-Wzx1oA2A@mail.gmail.com>


Bob...


All the years I raced, there was a covey of those 'Science Fiction Bathtubs' 
all prepped by Mark Eskuche and his Mequon, Wisconsin shop (Ecurie Racing).   
The guy is a Porsche Wrench Legend, and one can't help but being totally 
impressed with his results.  Famous as a wrench, soft-spoken Eskuche is a hell 
of a driver too.  When ex-SCCA champion Vic Skirmants went 'vintage', Mark got 
in one of the cars he prepped for a client for a session, and gave Vic all he 
could handle.  I forget...he may even have won, but they swapped the lead back 
and forth for the whole session.  Once I was talking to him about engine work, 
and he told me that they spend as much time on the chassis. 


Bill Dentinger
  



-----Original Message-----
From: Bob Kramer via Fot <fot at autox.team.net>
To: Paul Ricco <paulricco at att.net>
Cc: Triumph 'Friends of Triumph <fot at autox.team.net>
Sent: Thu, Sep 6, 2018 7:43 am
Subject: Re: [Fot] 89MM piston question



Paul


I think that what you asked for just happened. I hesitated to mention that I 
was going to buy 89's. I've been at this since 1996 and I considered them 
taboo, but the response has been both open and helpful, across the board. I now 
know what I need to know to be comfortable with them.


I'm not doing the hard work that some guys have done to try and improve the 
dependability and power from the TR motor. I have always just built them using 
the best advice and the best parts I could afford, and then I drive the snot 
out of it. It's fun to have guys pass you on the long straights and get them 
back in the twisties. It's a lot less fun when the engine breaks. So a big 
shout out to the guys who have designed, crafted or otherwise improved the 
available parts for slackers like me!



I'm with you, I think we do not share enough of our secrets. I am still pained 
by the first SVRA event at COTA, where some 15 or so 356's raced by me over and 
over again. Worse still they were in the garage next to me and I got to see the 
"originality" first hand. I don't think there was even one driver who worked on 
his own car. 


 Bob




Bob Kramer



On Sat, Sep 1, 2018 at 3:46 PM, Paul Ricco via Fot <fot at autox.team.net> 
wrote:

FOT,


Large companies in the US have put so much focus on having their employees 
compete against each other internally that most employees have forgotten who 
the true competition is? the people that represent other companies.


It would be great if the TR community continues to openly help each other keep 
the TRs completive against the Volvos, the 356s that sound like formula cars 
when they rip past (guessing none of them have a single compliant parts on 
them), MGs, etc.


It would be great if FOT could remain a forum where people could ask questions, 
get honest answers from those who know, and people did not get smacked by 
someone who does not agree with them.


It would great if we stayed focused as group to kick ass over the marques that 
we race against, instead of kicking each others' asses every time a question 
comes up.


Even in the highly completive world of professional motorsports, the factory 
works teams that care about their marque's success do a tremendous amount to 
support privateers on and off the track.   They focus on beating the other 
marques first.  I have personally witnessed the Porsche factory team hand parts 
to a privateer at an IMSA race.  All done that so the privateer would start and 
finish the race successfully.  All done to promote the marques over other 
marques.  We have a lot of fun at the track when the TRs are all doing great in 
their respective classes over the other marques in the group.


Have a great labor day weekend and I look forward to seeing a group of fast TRs 
at RA in a few weeks.


Paul 



On Sep 1, 2018, at 11:02 AM, John Styduhar via Fot <fot at autox.team.net> 
wrote:



If you really had serious compliance with most group's rules, I would guess 
half the TR cars would not pass muster.  Let's have fun together.   




On Sat, Sep 1, 2018 at 9:40 AM Terry Stetler via Fot <fot at autox.team.net> 
wrote:



Indeed there are Glen.
 
Sent from Mail for Windows 10
 

From: Fot <fot-bounces at autox.team.net> on behalf of fubog1 via Fot <fot at 
autox.team.net>
Sent: Saturday, September 1, 2018 7:34:26 AM
To: rkramer56 at gmail.com
Cc: fot at autox.team.net
Subject: Re: [Fot] 89MM piston question
 


everybody else seems to be using 89.


HaHa not everybody, rules say 87mm, there are still a few guys running them 
(and winning)...

Glen 







-----Original Message-----
From: Bob Kramer via Fot <fot at autox.team.net>
To: van.mulders.marcel <van.mulders.marcel at telenet.be>
Cc: fot <fot at autox.team.net>
Sent: Fri, Aug 31, 2018 11:26 pm
Subject: Re: [Fot] 89MM piston question



I've always used 87 MM due to the rules but everybody else seems to be using 
89. The procedures are the same so It'll be the same. I blew a head gasket last 
time out, compression into the cooling system and blew off the bottom hose. I 
guess it wasn't tight enough, and scuffed two pistons before I could shut it 
down. 



Bob Kramer



On Fri, Aug 31, 2018 at 12:43 PM, <van.mulders.marcel at telenet.be> wrote:


Bob,
It is definitely necessary to make that modification to the liners. The relieve 
should correspond to the shape of the combustion chambers : about 4 mm wide on 
a 89mm engine.
Marcel



Van: "fot" <fot at autox.team.net>
Cc: "fot" <fot at autox.team.net>
Verzonden: Donderdag 30 augustus 2018 00:05:43
Onderwerp: [Fot] 89MM piston question



Do the guys running the 89MM pistons and liners need to relieve the liners to 
clear the intake valve, or does the extra MM make the difference?




Bob Kramer



On Tue, 


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