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Leaking gas from rear carb & other issues...

Here’s where to discuss anything specific about your standard(ish) car or something that applies to the model in general.
auto_cran
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Postby auto_cran » 23 Jun 2014 16:31

So I ordered a couple of the Grose Jets, and not liking the condition the bowl gaskets were in, I decided to order a couple of carb rebuild kits, which also came with the jets (like Hasbeen said).

Given a choice of the Grose Jets or the ones from the kit, which should I install?

Also - can I replace the choke gaskets without removing the carbs?

Anything else I should replace since I have the kits? The diaphragms currently installed are new.

Or should I just bite the bullet and remove the carbs and do a full rebuild?

As always - THANKS!!

Chris
'76 Java Green FHC – a continued work in progress

Workshop Help
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Postby Workshop Help » 23 Jun 2014 17:39

Do not bite the bullet. Ammunition is just too expensive these days and dental repair work is beyond the pale.

The advantage of the Gross Jet is it can be purchased separately. Will it last like the ad infers? That's a good question, but the original inlet valves on my 1976 TR7 lasted 160,000 miles on the front carburetor and 163,000 miles on the rear. Their failure was signaled by drippage from the drain plug on the bottom of the float bowl.

Last Sunday's sermon by The Right Reverend Crabapple dealt with succumbing to Temptations. Could it be the Siren's Song of overworking your carburetors is tempting you to succumb to unnecessary labors? May I humbly suggest to complete one item of repair at a time, pausing to evaluate the effect, be it positive or negative.

Many are the derelicts abandoned when the exhausted owner wearies of biting off more than one can chew much less swallow. Yea, verily, the small bite thoroughly chewed yields the memory of it's flavor far longer than the wolfed down chunk. This Parable of Life applies to many aspects of TR7 lore.

Mildred Hargis

FI Spyder
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Postby FI Spyder » 24 Jun 2014 13:39

We just had a tech section at our last meeting on the effects of alcohol on older carbs. During the course of discussion the carb guy said that Gross jet has been sold off some time ago (don't know date) when the guy who owned the company died or got sick and the quality of the gross jet's are now not the same as the old ones and the gross jets he has installed where not as good. Don't know if that will be your experience but just relaying the message.





- - -TR7 Spider - - - 1978 Spitfire- - - - 1976 Spitfire - - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - Yellow TCT
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auto_cran
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Postby auto_cran » 24 Jun 2014 15:35

Thanks FI. Yeah I've been reading similar accounts - some have had issues with the newer ones, yet others swear by them.

I may just go with the ones that came in the kit.

Chris
'76 Java Green FHC – a continued work in progress

auto_cran
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Postby auto_cran » 30 Jun 2014 11:28

So with all the parts in & time on my side, yesterday I once again removed the carb bowls, installed new inlet valves (from the rebuild kit), cleaned up everything real good, re-adjusted the floats and installed new bowl gaskets. Also installed a new fuel filter (again).

For my initial test, rather than have fuel drawn from the tank, I had it get its fuel from a jar. Upon startup, there were no fuel leaks, idled great and revved nicely - no more wanting to die when pressing the gas. I was even able to drive it up and down the street. By far the best it has run since our ownership.

Back in the garage, I reconnected the line to the fuel tank, started it up and let it run/idle for about 15 minutes, occasionally revving it. Not a single hiccup or leak. Even the occasional stall was absent.

Next up is to adjust, sync and tune the carbs. I recently bought a Unisyn Air Flow Balance Tool and Mixture Setting Tool to get the job done. Hopefully I can get to it by the weekend.

Chris
'76 Java Green FHC – a continued work in progress

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