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Author Subject: carbs and cams
maddriver9

Regular

Location: nr leek

Registered: 12 Mar 2008

Posts: 341

Status: Offline

Post #1
is anyone running weber carbs and cams as oppossed to throttle bodies and cams.
are they just as good at uping the bhp.
im thinking of doing this as i can not afford tbs and managment and the carbs seem like a cheaper option.
what sort of spec and gains are to be had
i dont want anything wild, somewhere around 200 bhp mark would be nice.
any advice ?

________________________________________

178bhp 205gti6
¼ mile in 14.2
Posted 16th Nov 2011 at 18:41
matty_rallye

Senior User

Location: Devizes

Registered: 28 Oct 2005

Posts: 966

Status: Offline

Post #2
Matt Holley used to run carbs on his 2.1 gti 6 engine, then changed to itb's. Trouble with carbs is to get them set up 'well' you are really best to run an ignition ecu. I think tho that once youve forked out on the carbs, manifold and other bits needed, got an ignition ecu and had it mapped you may as well have gone that little bit furthar with throttle bodies. You will never get it to run aswell, which if used just as a track car might not be so noticable, but if used on the road it certainly would be!

________________________________________

2.1 16v 306 Rallye.
Posted 16th Nov 2011 at 19:18
rallyeash

Seasoned Pro

Location: Devizes

Registered: 11 Dec 2006

Posts: 4,424

Status: Offline

Post #3
if your going to run carbs you need a ignition ecu for a gti6 engine ideally, the dizzy converters are pants and you
will loose everything your trying to gain.

as above once you've bought the full carb setup, ignition ecu, wired it up and had it mapped might aswell of gone down the TB route.

try pick up a second hand set of satchell thottle bodies complete with inlet and trumpets, just as good if not better than jenveys and dont carry the same price tag.

________________________________________

230 hp 2.1 16v XU 205 rallye on jenveysHyper Project thread here
309 3dr K20 Type R
Posted 16th Nov 2011 at 20:19
maddriver9

Regular

Location: nr leek

Registered: 12 Mar 2008

Posts: 341

Status: Offline

Post #4
yeah i know what your saying, but second hand webers go for about £300 were as tbs are about £600.
Then there is management, say omex at £600 plus fitting.
i dont know how much an ignition ecu is but i imagine its half the price.

________________________________________

178bhp 205gti6
¼ mile in 14.2
Posted 16th Nov 2011 at 22:18
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,839

Status: Offline

Post #5
Colins bodies are £650 new, DTA S40 is £500 new, ignition only is £400 iirc.

How did you get 178 already?

one massive plus point of well mapped bodies is that they will potentially use less fuel, whereas carbs will 100% use lots more fuel.

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 16th Nov 2011 at 22:41
maddriver9

Regular

Location: nr leek

Registered: 12 Mar 2008

Posts: 341

Status: Offline

Post #6
i dont know how its made that power ?

got a great price i think on jennys £335+vat and omex 600 £545+vat
i know that there is a bit of work to be done as well but at that price why mess about.

________________________________________

178bhp 205gti6
¼ mile in 14.2
Posted 17th Nov 2011 at 21:40
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline

Post #7
Don't forget all the hidden extras, backplate, trumpets, linkages, sensors, TPS, coilpack, dome filter, plug leads, loom...

________________________________________

R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars
Posted 17th Nov 2011 at 22:09
maddriver9

Regular

Location: nr leek

Registered: 12 Mar 2008

Posts: 341

Status: Offline

Post #8
yeah but i can sort most of that out myself so it wont be a massive amount more, mostly the map that will cost .

________________________________________

178bhp 205gti6
¼ mile in 14.2
Posted 17th Nov 2011 at 22:16
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline

Post #9
Get the Jenvey linkage, when it comes to balancing it all up and mapping the RR operator wont thank you if he has to p*ss about with some fiddly homemade Meccano shite. It will save you money in the long run and be safer as the mechanisim is very unlikely to bind and jam your throttles open.

________________________________________

R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars
Posted 17th Nov 2011 at 22:20
rallyeash

Seasoned Pro

Location: Devizes

Registered: 11 Dec 2006

Posts: 4,424

Status: Offline

Post #10
+1 buy a proper linkage. one place where you shouldnt try save money

________________________________________

230 hp 2.1 16v XU 205 rallye on jenveysHyper Project thread here
309 3dr K20 Type R
Posted 19th Nov 2011 at 11:08
maddriver9

Regular

Location: nr leek

Registered: 12 Mar 2008

Posts: 341

Status: Offline

Post #11
yeah i will be doing things proper, think i might just go to town and build a monster, aim for around 250bhp.
you only live once.

________________________________________

178bhp 205gti6
¼ mile in 14.2
Posted 23rd Nov 2011 at 19:21
b11 bob Banned!

Location: birmingham

Registered: 19 Dec 2010

Posts: 265

Status: Offline

Post #12
maddriver9 wrote:
yeah i will be doing things proper, think i might just go to town and build a monster, aim for around 250bhp.
you only live once.

Im running carbs and have heard all the crap on here about how tb are going to give you this and yet there is no gti6 engine on here running on tbs giving 213 bhp yet ive got that on a standard engine by running carbs and thats with a dizzy adaptor
If you want to save money the best option for you is twin 45 carbs but try to get hold of delroto carbs because they are better.If you got more money than sense go for tbs like the majority on here.The key to a carb set up is the Dizzy which a lot of people on here cannot get right and end up condeming carbs and going down the tb route and upseting their bank balance.
Tbs will give you better fuel economy sharper throttle response over carbs but the top end power and torque will be the same as carbs.Carbs are easy to set up once they have been rolling road tuned.Tbs to set up correctly will need mapping to suit your application but most rolling road tuners never map tbs all they do is copy a another map onto your ecu from a previous gti6 that was running tbs hence why they rarely make over 200 bhp
The choice is yours but to me its a no brainer

________________________________________

205 GTI6 235 bhp at 7400 rpm
Posted 4th Dec 2011 at 13:31
ballardpaul

Seasoned Pro

Location: Croydon

Registered: 22 Jul 2008

Posts: 4,135

Status: Offline

Post #13
And breath.

________________________________________

Phase 2 Blaze GTi 6 (Standard) Sold
Phase 3 Supercharged China GTi 6 (249.8 BHP) Sold
Phase 3 Supercharged Diablo GTi 6 (443 BHP)Sold
Nissan 350Z (300 BHP)
Posted 4th Dec 2011 at 16:47
yippeekayay

Seasoned Pro

Location: wilts

Registered: 27 Oct 2008

Posts: 4,144

Status: Offline

Post #14
ballardpaul wrote:
And breath.


you should see his opinions on buying stuff...." how to make friends and influence people " might be a good chrimbo present for him... after I have read it of course!!!

________________________________________

306 less for first time in nearly 7 years. Lets keep it that way... please refuse any offers i make to buy your 306 ( doctors letter supplied by request)

Marmite and cheese sandwiches anyone???

Burns and Mcrae will be forever missed.
x box "yippeekayaymofo"
Posted 4th Dec 2011 at 16:52
prism7guy

Seasoned Pro

Location: DoncastAAAAARGH

Registered: 13 Jan 2008

Posts: 4,640

Status: Offline

Post #15
welshpug! wrote:
Colins bodies are £650 new, DTA S40 is £500 new, ignition only is £400 iirc.


What bore are the bodies that Colin uses?
Are they the esprit ones which i'm sure i've seen mentioned somewhere?
Would they be running 8 injectors setup?

Sorry for so many questions, just read that i'd probably struggle to get more than around 50bhp per cylinder with 40mm bore TB's, i'd be hoping for a bit more than that with the cams i've got and the engine which i will be building eventually.

________________________________________

Goldie the track car.
Posted 4th Dec 2011 at 17:51
rallyeash

Seasoned Pro

Location: Devizes

Registered: 11 Dec 2006

Posts: 4,424

Status: Offline

Post #16
yep esprit items, can only run 4 injectors in the standard position. 45mm tb's also

________________________________________

230 hp 2.1 16v XU 205 rallye on jenveysHyper Project thread here
309 3dr K20 Type R
Posted 4th Dec 2011 at 19:57
dav1

Regular

Location: leek/staffs

Registered: 20 Jun 2011

Posts: 312

Status: Offline

Post #17
213bhp on std engine and carbs LOL

________________________________________

230bhp 205 gti6
Posted 4th Dec 2011 at 20:00
maddriver9

Regular

Location: nr leek

Registered: 12 Mar 2008

Posts: 341

Status: Offline

Post #18
hes going take you down baz

________________________________________

178bhp 205gti6
¼ mile in 14.2
Posted 4th Dec 2011 at 20:02
prism7guy

Seasoned Pro

Location: DoncastAAAAARGH

Registered: 13 Jan 2008

Posts: 4,640

Status: Offline

Post #19
Cheers Ash. Thumbs up

________________________________________

Goldie the track car.
Posted 4th Dec 2011 at 20:03
dav1

Regular

Location: leek/staffs

Registered: 20 Jun 2011

Posts: 312

Status: Offline

Post #20
think i best sell all my tackle, buy some carbs and a std engine. plus save bit of money at the same time win winCrazy

________________________________________

230bhp 205 gti6
Posted 4th Dec 2011 at 20:05
matty_rallye

Senior User

Location: Devizes

Registered: 28 Oct 2005

Posts: 966

Status: Offline

Post #21
dav1 wrote:
213bhp on std engine and carbs LOL


Sounds like an optimistic figure. Confused

________________________________________

2.1 16v 306 Rallye.
Posted 4th Dec 2011 at 20:05
rallyeash

Seasoned Pro

Location: Devizes

Registered: 11 Dec 2006

Posts: 4,424

Status: Offline

Post #22
b11 bob wrote:
maddriver9 wrote:
yeah i will be doing things proper, think i might just go to town and build a monster, aim for around 250bhp.
you only live once.

Im running carbs and have heard all the crap on here about how tb are going to give you this and yet there is no gti6 engine on here running on tbs giving 213 bhp yet ive got that on a standard engine by running carbs and thats with a dizzy adaptor
If you want to save money the best option for you is twin 45 carbs but try to get hold of delroto carbs because they are better.If you got more money than sense go for tbs like the majority on here.The key to a carb set up is the Dizzy which a lot of people on here cannot get right and end up condeming carbs and going down the tb route and upseting their bank balance.
Tbs will give you better fuel economy sharper throttle response over carbs but the top end power and torque will be the same as carbs.Carbs are easy to set up once they have been rolling road tuned.Tbs to set up correctly will need mapping to suit your application but most rolling road tuners never map tbs all they do is copy a another map onto your ecu from a previous gti6 that was running tbs hence why they rarely make over 200 bhp
The choice is yours but to me its a no brainer




your car is not making 213hp with a standard engine on carbs. FACT!! either some very inaccurate rollers, or some bullshit going on... i'd be supprised if its even making standard power with a converted dizzy.

________________________________________

230 hp 2.1 16v XU 205 rallye on jenveysHyper Project thread here
309 3dr K20 Type R
Posted 4th Dec 2011 at 20:07
matty_rallye

Senior User

Location: Devizes

Registered: 28 Oct 2005

Posts: 966

Status: Offline

Post #23
rallyeash wrote:
b11 bob wrote:
maddriver9 wrote:
yeah i will be doing things proper, think i might just go to town and build a monster, aim for around 250bhp.
you only live once.

Im running carbs and have heard all the crap on here about how tb are going to give you this and yet there is no gti6 engine on here running on tbs giving 213 bhp yet ive got that on a standard engine by running carbs and thats with a dizzy adaptor
If you want to save money the best option for you is twin 45 carbs but try to get hold of delroto carbs because they are better.If you got more money than sense go for tbs like the majority on here.The key to a carb set up is the Dizzy which a lot of people on here cannot get right and end up condeming carbs and going down the tb route and upseting their bank balance.
Tbs will give you better fuel economy sharper throttle response over carbs but the top end power and torque will be the same as carbs.Carbs are easy to set up once they have been rolling road tuned.Tbs to set up correctly will need mapping to suit your application but most rolling road tuners never map tbs all they do is copy a another map onto your ecu from a previous gti6 that was running tbs hence why they rarely make over 200 bhp
The choice is yours but to me its a no brainer




your car is not making 213hp with a standard engine on carbs. FACT!! either some very inaccurate rollers, or some bullshit going on... i'd be supprised if its even making standard power with a converted dizzy.


What i was trying to say, with slightly less tact LOL

________________________________________

2.1 16v 306 Rallye.
Posted 4th Dec 2011 at 20:10
dav1

Regular

Location: leek/staffs

Registered: 20 Jun 2011

Posts: 312

Status: Offline

Post #24
Only one thing for it B11 BOB a race. your 213bhp 205 against my 219bhp tb,cammed,pistons,etc 205 if yours is 213 then there should be nothing in it.Thumbs up

________________________________________

230bhp 205 gti6
Posted 4th Dec 2011 at 20:11
maddriver9

Regular

Location: nr leek

Registered: 12 Mar 2008

Posts: 341

Status: Offline

Post #25
sounds fun

________________________________________

178bhp 205gti6
¼ mile in 14.2
Posted 4th Dec 2011 at 20:11

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