Carb Rebuild HELP
Passenger
Posts: n/a
Carb Rebuild HELP
Just got quoted $92. for a carb rebuild kit for my '85 GSL. WOW! What's the alternatives? My original desire was to put a header on it and replace the carb with a side draft - til I saw the cost. Is it worth rebuilding or are there other carb options that are not as intrusive?
History... paid $100. for a not so great car. paid $350. for an okay motor (bad rear rotor in original). Upon taking off carb I did not take much care as I planned on a performance swap...til I saw the price. Installed origianal carb on motor. Car now starts and runs at higher RPM, but dies upon putting into gear (auto tranny). Replaced vacuum modulator valve - no help. Did note gas seeping though gasket of carb - tightening screws was no help.
Previous posting about auto tranny vacuum question in tech help yielded not one reply. Sure hope you guys have a better response on this one!
Thanks in advance!
History... paid $100. for a not so great car. paid $350. for an okay motor (bad rear rotor in original). Upon taking off carb I did not take much care as I planned on a performance swap...til I saw the price. Installed origianal carb on motor. Car now starts and runs at higher RPM, but dies upon putting into gear (auto tranny). Replaced vacuum modulator valve - no help. Did note gas seeping though gasket of carb - tightening screws was no help.
Previous posting about auto tranny vacuum question in tech help yielded not one reply. Sure hope you guys have a better response on this one!
Thanks in advance!
Senior Member
Joined: Apr 2001
Posts: 573
Likes: 0
From: Tenn.
Hi, I had the leaking from the side problem too, i replaced the accelerator pump and that fixed it,,($19.00),,dont know about the going dead in gear problem , i have a 5 speed ,but sounds like the torque convertor if these cars have them,,,,,im sure youll be getting alot of answers soon,,,,and good luck,,,,
Old [Sch|F]ool
Joined: May 2001
Posts: 12,848
Likes: 563
From: Cleveland, Ohio, USA
$92! Did that include the Vaseline? 
I paid $25 for a kit from NAPA, included all necessary gaskets and the accelerator pump diaphragm. Kit was for '79-85 carbs.
I can see $92 IF the kit came with goodies like replacement solenoids, new jets, new emulsion tubes, new accelerator squirter block, etc. I haven't seen a rebuild kit that comprehensive, though, and 99% of the time you don't need that stuff anyway, just taer the carb down, soak it thoroughly in carb cleaner (like, for a couple days!) and spend a lot of quality time with toothpicks and compressed air to clean passages and jets out.
Usually carbs need rebuilt because the zillion little jets and orifices gunk up over time, and the gaskets shrink causing them to block some passages or open others to things they shouldn't be open to.
I paid $25 for a kit from NAPA, included all necessary gaskets and the accelerator pump diaphragm. Kit was for '79-85 carbs.
I can see $92 IF the kit came with goodies like replacement solenoids, new jets, new emulsion tubes, new accelerator squirter block, etc. I haven't seen a rebuild kit that comprehensive, though, and 99% of the time you don't need that stuff anyway, just taer the carb down, soak it thoroughly in carb cleaner (like, for a couple days!) and spend a lot of quality time with toothpicks and compressed air to clean passages and jets out.
Usually carbs need rebuilt because the zillion little jets and orifices gunk up over time, and the gaskets shrink causing them to block some passages or open others to things they shouldn't be open to.
Passenger
Posts: n/a
Thanks for hte info. This appeared to be a good sanity check. Any info on a more economical (then $800 for delorto setup) carb that could mount to the stock intake? I'd love to get rid of the "rat's nest", but there appears to be too many "vacuum diaphrams" on the carb controlled by it.
Junior Member
Joined: Feb 2001
Posts: 13
Likes: 0
From: Big Rapids, MI
Please please please post instructions for rats nest removal... I am going to be going through this next week. I had to order new water pump gaskets from Mazdatrix as mine were shot so I thought while I was waiting why not take the carb off, clean it up and have the intake manifold ported and polished with the help of a flow bench?
I want to remove anything that is not needed, I already have the exhaust replaced with RB long primary system, so I'm not really looking for emissions control.
My problem has been that no one really has a clear answer as to what is safe to take off, they just say take it all off but keep the vacum advance...
I would feel better with a little more detail.
I want to remove anything that is not needed, I already have the exhaust replaced with RB long primary system, so I'm not really looking for emissions control.
My problem has been that no one really has a clear answer as to what is safe to take off, they just say take it all off but keep the vacum advance...
I would feel better with a little more detail.
Trending Topics
Full Member
Joined: Mar 2001
Posts: 54
Likes: 0
From: Here, KY
I'll help
I have a carb stock with manifold and a K&N filtercharger with smaller lid for higher airflow I'll sell ya. The carb runs perfect, I just removed it to install my dual weber 36DCD setup last week.
Carb alone 50.00, with filter charger and air cleaner 75.00, with manifold and all, 100.00.
Carb alone 50.00, with filter charger and air cleaner 75.00, with manifold and all, 100.00.
Passenger
Posts: n/a
Appreciate all the help! I did end up getting a re-build kit Friday and started the re-build this weekend. Sure wish I had noted where the differing size jets go! I ended up placing all the larger sizes in the secondary side of the carb., we may find out later I was wrong.
Also, supposed to find out about picking up another car tonight. I've been trying to nail this for a few weeks. I belive the carb on it is functional, so I may get myself out of trouble after all.
Will let you know how things progress! Thanks to all again.
Also, supposed to find out about picking up another car tonight. I've been trying to nail this for a few weeks. I belive the carb on it is functional, so I may get myself out of trouble after all.
Will let you know how things progress! Thanks to all again.
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
Sep 16, 2018 07:16 PM
FbFuninthesun
New Member RX-7 Technical
3
Oct 6, 2015 08:03 AM