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TR6 w/ Downdraft Webers

To: triumphs@autox.team.net
Subject: TR6 w/ Downdraft Webers
From: Jeff Arrowsmith <jarrow@dlcwest.com>
Date: Fri, 6 Dec 1996 19:08:28 -0700
>I purchased a 1973 TR6 about a year ago with a blown engine.  After the
>rebuild, I haven't been able to successfully tune the carbs.  It has
>downdraft (2) DGV5A Webers.  During the rebuild I increased the compression
>slightly and installed a special cam.  But asside from that and the Webers,
>it's completely stock.  The car runs like a bandit at medium to high revs,
>but is very prone to stalling and always hesitates on accelerating from a
>stop.  I'm able to avoid stalling by pulling out the choke during
>acceleration. This condition is noticeably worst in cold weather.  One
>garage I tried said that these Webers should never have been put on the car
>because of the "toilet bowl" design of the transition piece that mounts
>between the carbs and the original intake manifold.  Gas tends to condense
>here in cold weather.  I believe this to be true because I've noticed raw
>gas in this bowl when I've disassembled the carb.  I recently changed the
>thermostat from 180 to 195F and installed a throttling valve in the hot
>water line running to the intake manifold to send more  hot water flow to
>the transition pieces and raise their temperature.  This helped, but not
>enough to solve the problem.
>
>Does anyone out there have a TR6 running with DGV5A Webers and, if so, do
>you have any suggestions for improving performance.  I have the original
>Stromberg carbs and a set of TR4 carbs.  Unless I solve the current
>performance problems, I'm tempted to go back to one of these options.
>
>Thanks in advance for the help,
>
>Jim Haller
>James Haller
>

Check and doublecheck your float levels......needle valves and associated
parts..........after that check for leakages (anywhere). It should be in
there somewhere.:-)


Jeff.A


1967 GT6 Mk1
1975 Spitfire
1975 TR6
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"Why do you own 3 Triumphs?".........because I can't afford 4!
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Rap = Disco for the 90's
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