View Full Version : The Proper Gr.A (Gp.A) Carb Kit Group buy
Woznaldo
02-02-2014, 11:32
While trawling the net for various GTT bits I came upon what I believe to be a genuine Group.A Carb Kit. Here's some pics:
http://i196.photobucket.com/albums/aa40/woznaldo/GTT%20Group%20A%20Carb/GTTGpACarbKit1_zps17673084.jpg
http://i196.photobucket.com/albums/aa40/woznaldo/GTT%20Group%20A%20Carb/GTTGpACarbKit9_zps4aae6404.jpg
http://i196.photobucket.com/albums/aa40/woznaldo/GTT%20Group%20A%20Carb/GTTGpACarbKit17_zps4fe0e109.jpg
I can try to contact the guy that it is running it to see he can give details on a supplier, but I have tried to contact for other stuff and he hasn't been too responsive?
Interesting all the same. :)
Guybrush
02-02-2014, 11:35
I'm sensing a group buy.... :D
Looks so pretty, I want it
Slammed 66
02-02-2014, 11:49
I'm sensing a group buy.... :D
X2
Yes, and I would be interested in purchasing one! Don't think you would find another one in a hurry.
oggie1970
03-02-2014, 15:49
i want 1 :)
Woznaldo
05-02-2014, 04:17
Here's some more info:
http://imageshack.com/a/img32/6785/37hx.jpg
http://imageshack.com/a/img842/2200/m5v1.jpg
http://imageshack.com/a/img853/1348/jeh0.jpg
I'll let you do the translation
Woznaldo
08-02-2014, 06:24
A bit more info. Here's the original Renault Group A Carb Venturi to compare to the kits offered above.
http://i74.servimg.com/u/f74/11/36/29/46/16445610.jpg
As I find more, I will post it up here.
In the document, where it mentions jet sizes can anyone please translate the above 2 lines? It seems to suggest drilling 2 holes in the carb to 3mm and 3.5mm?
Woznaldo
09-02-2014, 11:07
The google translation gives this:
Choke boost pass 3mm
Arrival emulsion tube pass 3.5mm
I would say that 'pass' means 'pass through with a drill'?
Sometimes the direct translation doesn't really make sense when talking engineering. :crap:
i'm going to measure a standard carb and see what size them holes are. I wonder if the "tuner" carbs missed a few key points to making the group a work properly.
smithyr5gt
10-03-2014, 19:43
hi guys, today i have been talking to gav. my friend with the maxi. and he has told me "if i can" to get this as it is the write way to go. this is were the "group a" modded carb was supposed to go but never really did in the rite way. i want one so put me down for a group buy if not ill just get my own. i trust this guys opinion totally.
Alastair
10-03-2014, 20:59
i used to run a genuine Group A (or Gp N ;) ) carb.
It gave better power at the same boost, better throttle response and the only reason i sold it was because i went EFi.
Very easy to set up the fuelling, i have the Group N renault manual somewhere that lists lots of part numbers and tech details etc. Might have the jet sizes in there.
It was snapped up by a rally driver in Ireland IIRC when i sold it.
If i go carb again on a different car i'd buy one of these.
Maybe lend the book to the club for copying/scanning/archiving? :)
BluntyR5GTT
14-03-2014, 04:21
defo interested guys
defo interested guys
I would be interested in one of these kits!:agree:
BluntyR5GTT
20-03-2014, 11:39
hi guys just wanting to let you know iv been in contact with gary smith (smithyr5gtt) via facebook and proposed that i could help out with getting the ball rolling to get a group buy on these kits for the club.
i sent the required company an email earlier in the week and had a reply this morning so the wheels are in motion but we will need 10 genuine interested people to activate the group buy and get us a decent discount.
i will keep you updated once we get a bit further with negotiations but please feel free to note your interest on here
BluntyR5GTT
24-03-2014, 16:10
update on the potential group buy
i received an email from the company who make these kits with a confirmed price on a single kit and a confirmed price on a group buy of 10 kits
the figures are as follows
for 1 complete kit its 250 euros/ £208
for 10 complete kits per kit would be 182.5 euros/ £152.50
now i feel that is a great saving and is something i certainly feel we can take advantage of.
olivier also mentioned they do a special camshaft that works with this carb kit, not sure if that would interest anyone but the cost of them is 345 euros and am sure if we had a few people wanting them could get the cost down again.
Markey Mark (BD)
24-03-2014, 16:16
Wonder what the spec of the cam is, if its similar to one that is readily avaliable already or completely different
BluntyR5GTT
24-03-2014, 16:18
hi mark this is something that iv just replied and asked the guy, as soon as he gets back to me ill post it up on here.
i have asked how they differ from piper/cat cams 285 cams etc
This is great.
Blunty, this is one of those thing that can go up on the FB site bud. The latest group buy being offered exclusively to RTOC members :)
BluntyR5GTT
24-03-2014, 16:58
trev would you like to post it up on there fella?
i run one of the rtoc pages on there but not the main one, i will post it up on the one i run no bother
Hi mate. Apols, I'm not on FB at all bud. :disagree:
Is there another committee, mod or AR who is a member of the main FB group who will do this for us, and indeed take up the reins to relay all the member benefits as and when they happen please?
hi guys, today i have been talking to gav. my friend with the maxi. and he has told me "if i can" to get this as it is the write way to go. this is were the "group a" modded carb was supposed to go but never really did in the rite way. i want one so put me down for a group buy if not ill just get my own. i trust this guys opinion totally.
BTW - tell Gav i said hi. :)
Nad-5GTT
24-03-2014, 19:41
Great work guys, I'd be interested :)
Thundercat
24-03-2014, 20:56
Interested Mr Blunty!
Wonder what the spec of the cam is, if its similar to one that is readily avaliable already or completely different
This ^^^:agree:
BluntyR5GTT
25-03-2014, 05:30
so then now we need a genuine list please only add your name to this if you can 100% go through with the deal, i have added all the people who showed interest with a? by your name so if you could please edit accordingly that would be great
1 bluntyr5gtt
2 smithyr5gt
3 thundercat ?
4 1988cab ?
5 guybrush ?
6 oggie1970 ?
7 slammed66 ?
8 fordy ?
9 nad5gtt ?
10
BluntyR5GTT
25-03-2014, 05:41
this is whats included in each kit
http://i428.photobucket.com/albums/qq4/bluntyn40/renault%205%20gt%20turbo/gra_zps120e7dd8.png (http://s428.photobucket.com/user/bluntyn40/media/renault%205%20gt%20turbo/gra_zps120e7dd8.png.html)
http://i428.photobucket.com/albums/qq4/bluntyn40/renault%205%20gt%20turbo/CarbuR5_11GTGRA_zpsced6d31f.jpg (http://s428.photobucket.com/user/bluntyn40/media/renault%205%20gt%20turbo/CarbuR5_11GTGRA_zpsced6d31f.jpg.html)
A lot of the messages that were on this page have been deleted, no idea why? So annoying when this happens on Rtoc:mad:
I seem to remember there were 2 different sizes available. Which size is in this group buy?
It looks like some messages were deleted as they didn't have any relevance to the group buy. It's easier/quicker to find info in threads when they're cleaned up :)
Yes you're right there is 2 sizes available; 26mm and a 27mm venturi. I assume you can order whichever one you want. Perhaps Blunty can confirm?
Markey Mark (BD)
25-03-2014, 08:28
1 bluntyr5gtt
2 smithyr5gt
3 thundercat ?
4 1988cab ?
5 guybrush ?
6 oggie1970 ?
7 slammed66 ?
8 fordy ?
9 nad5gtt ?
10 Markey Mark ?
Seal kit at €90? What are these seals? Just the same as in the RTOC carb kit at £35.50 or are there bits in this kit that are specifically required for the upgraded parts?
If not, folk could save £60 off the price?
Nad-5GTT
25-03-2014, 10:26
1 bluntyr5gtt
2 smithyr5gt
3 thundercat ?
4 1988cab ?
5 guybrush ?
6 oggie1970 ?
7 slammed66 ?
8 fordy ?
9 nad5gtt ?
10 Markey Mark ?
Nad-5gtt :)
Slammed 66
25-03-2014, 10:26
Deffinately interested but will wait for a 'final' price before I commit. Hopefully as Trev says there could be a substantial saving on the seal kit.
mike had a gpA carb 28mm venturi, and the car detted so it must still need setting up correctly with the right jets, but i beleive this is a proper kit
BluntyR5GTT
25-03-2014, 10:46
That list there is just an example of one kit so the prices are more than what they are in the group buy. I just posted that up so you can see whats included in the kit.
Iv had an email regarding the venturi size and he says its 25.5mm which isnt much larger than oe? Just so you know im only going through the contact that woznaldo passed onto smithy.
So is the 25.5mm venturi the only option?
Good job in finding these kits Woz, and well done to those getting the ball rolling so to speak.
I am extremley interested to see/understand what gains can be had over a well spec'd & tuned std carb.
So the Group A 11 turbo's were 185bhp(on a T2) - ok that's pretty awesome :agree:, but they had 1401cc
but im sure these results could be possible with a std carb and the tuning witchcraft/afr monitoring available today? or is the reasoning behind these kits it to make the engine flow better/be more responsive at lower revs/load. Does one have any other thoughts? :coffee:
BluntyR5GTT
25-03-2014, 12:01
So is the 25.5mm venturi the only option?
Im awaiting a reply you guys will have bear with me ill keep you updated as soon as I possibly can
I can understand about tidying up the thread but should there not also be a healthy debate about weather or not these are actually of benefit? I know it's a group buy thread now but originally this was a does it work type of thread and some information has been deleted.
I'm not gonna loose any sleep over it but I would like as much information as possible so I can make an informed decision as to weather to part with my hard earned.
All this thread says to me now is they are awesome and everybody needs them to make good power:disagree:
BluntyR5GTT
25-03-2014, 12:41
As of later on today ill be handing over the role of organsing this group buy etc as I really have not got the time.
Im also going have to step down from my role as media relations as I cant do the role the justice it deserves iv got a hell of alot of stuff happening atm.
I can understand about tidying up the thread but should there not also be a healthy debate about weather or not these are actually of benefit? I know it's a group buy thread now but originally this was a does it work type of thread and some information has been deleted.
I'm not gonna loose any sleep over it but I would like as much information as possible so I can make an informed decision as to weather to part with my hard earned.
All this thread says to me now is they are awesome and everybody needs them to make good power:disagree:
I agree, I want to read everything negative or positive to make a decision.
I may be interested in the 27mm kit. 25.5 seems a bit too similar to standard.
Your work and effort in organizing this group buy Blunty is awesome and in no way am I suggesting these kits are useless. One of the posts that's been deleted is me mentioning how interesting it would be to try and set a real group A carb up properly. Instead of the rubbish tuner 140 main jet 'group a' carbs and the thought of having a specially designed camshaft to suit the fueling really sounds like a winning idea:agree:
Don't drop out dude your time and effort is really appreciated by all #manhugs:laugh:
I'm in lads!
1 bluntyr5gtt
2 smithyr5gt
3 thundercat ?
4 1988cab ?
5 guybrush ?
6 oggie1970 ?
7 slammed66 ?
8 fordy ?
9 nad5gtt ?
10 Markey Mark ?
11 Mr_Dave
Me too:agree:o
1 bluntyr5gtt
2 smithyr5gt
3 thundercat ?
4 1988cab -defo
5 guybrush ?
6 oggie1970 ?
7 slammed66 ?
8 fordy ?
9 nad5gtt ?
10 Markey Mark ?
11 Mr_Dave
12 1988cab
If these are from Switzerland that's +20% VAT + some import tax.
The two pictures of the OE group A and this after-market one do look quite different from each other?
Alastair
25-03-2014, 22:03
Ill dig out my library when i get a mo and see what it says in there...
Whats the best way to remove both venturi's?I really fancy trying this kit out but after having a practice on a fooked carb body and making a complete mess of it im not sure i would want to attempt it on my good one.
The main (25mm) venturi is removed by taking the little round tab out of the bottom of the carb, then carefully pushing the venturi out. It will be tight and is difficult to remove without damaging it!
The small auxillary one is remoce by taking the tab ouf of the side of the card then unscrewing the bolt that holds it in.
The main (25mm) venturi is removed by taking the little round tab out of the bottom of the carb, then carefully pushing the venturi out. It will be tight and is difficult to remove without damaging it!
The small auxillary one is remoce by taking the tab ouf of the side of the card then unscrewing the bolt that holds it in.
No easy way then?I have managed to do it in the end but did cause some damage.Also in one of the above pis it looks like it tells you to drill the 2nd stage bush to 3mm?Surley not.:confused:
Grp a venturi? Its taking a step back in time with the knowledge of tuning the std carb on this site. Save your money
Grp a venturi? Its taking a step back in time with the knowledge of tuning the std carb on this site. Save your money
How many people have actually tried a genuine group A carb and not the tuner ones that obviously didnt work.Alistair has and highly recommends them.
The bored out standard 25mm venturi loses the actual venturi effect and therefore the fuelling is difficult to get right. I'd have though that if these 26/27mm Group A ones are better shaped and retain the venturi effect, then the fuelling will be easier to get right and in theory should work a whole lot better than the old tuner jobbies.Someones going to have to try them!
How many people have actually tried a genuine group A carb and not the tuner ones that obviously didnt work.Alistair has and highly recommends them.
The chances are that on a road car the fuelling will be pants unless your flat out. I know people who used the gen group a stuff back in the day, they weren't nowt flash.
Woznaldo
20-04-2014, 05:11
There is a lot of scare mongering about Group A Carbs, but this is because of all the very bad tuner imitations. Guy's in France have been running these for some time and with some success in world of motorsport.
I think someone needs to get on the French forums and gain some real feedback as it appears everyone is shooting from the hip at the moment.
can some give me the link to the page that sells these thanks
Can someone please send me a link to the supplier of these kits please
Send Woz a PM he might be able to help?
RussellT
14-06-2015, 18:03
A word of caution. I bought the Grp A venturi and Doris never ran well with it in. Ian Nixon couldn't get her to run right kept spluttering when you tried to accelerate and over fuelled back fired into the carb the works.
However I will be watching to see if you guys can get one to run well.
i'm going to have a fettle of my carb as my last base had a knife edged spindle and throttle plate but couldn't get the screws out and the spindle bushes had worn when i tried to rebuild it.
So used another base i had and put new end seals in
The aux venturi interests me and wonder if just changing that would give any benefits
As the brass tube look a different length, I wonder if the changed the position of the narrow region the main venturi?
What boost were these intended to work at? Would there be an optimum flow rate and they're not so good each side?
The cup cars (track) were limited to 14PSI.
The question is, why weren't the company or its contact details ever posted on this thread?
Anyway, not that it is much use but I have managed to find the person who I 'think' Woz was in touch with back at the start of the thread. A guy called Mike-11turbo who is from Switzerland.
If you look at these pics from a thread on the http://www.gtturborhone-alpes.fr/ forum (which I had to become a member of to be able to read the thread), you can see it's almost certainly the same workbench:
http://i48.tinypic.com/35n82fl.jpg
http://i49.tinypic.com/2ii8om0.jpg
These pics are from Feb 2013.
This is not much use though. I looked for some time yesterday for the company making the kits but couldn't find them.
It may be a good idea to get 1 set up and running use it as a comparison to our modified standard carbs, also sort any teething issues and to see the real difference.
By any means it's a fantastic find and great opportunity.
Woznaldo
15-09-2015, 12:52
Here's a link to a place that sells them. Not the original place I found, but looks ok from the limited pictures?
http://jettautosport.e-monsite.com/boutique/renault/5-gt-turbo/moteur/alimentation-carburant/pieces-neuves/kit-carburateur-gra-jas.html
Bang up Woz :agree::)
Only 55 Euros + tax! Is this everything that's needed?!
Looks like there are options on the venturi diameter too.
Wow, thats a good price. I might try one, just coz. Virtually all of the old tuner 'GP A' carbs were just a large venturi. It's rare that you see them with the brass aux venturi. :smokin:
Woznaldo
17-09-2015, 13:08
Obviously, like the std Carb, the setup of these Gp.A Carbs is critical. Here's some setup info, that I think you get with these kits, but if not it's here.
http://i196.photobucket.com/albums/aa40/woznaldo/The%20Yellow%20Peril/Group%20A%20Carb%20Setup_zpsakxwp3zc.jpg
As you can see, it does need some translation, but I'm sure some of our French brothers will step in?;)
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