Twin Weber conversion
Discussion
What car/engine, and new or used?
New, I'd guess ballpark would be around £800 these days, including manifold, carbs, linkage and filters, but check Webcon's wesite and see if they do a kit for your car.
Second hand can be a bit hit-and-miss, 'cos some carbs that look fine can be just about scrap, but on the other hand I've also picked up pairs that ran perfectly and didn't even need re-jetting for reasonable money.
Keep an eye on e-bay, to get some idea of second-hand prices - there are always a few for sale. If you're lucky, they occasionally go cheap (around £100-£125 would be cheap), but good ones usually run to £250+
New, I'd guess ballpark would be around £800 these days, including manifold, carbs, linkage and filters, but check Webcon's wesite and see if they do a kit for your car.
Second hand can be a bit hit-and-miss, 'cos some carbs that look fine can be just about scrap, but on the other hand I've also picked up pairs that ran perfectly and didn't even need re-jetting for reasonable money.
Keep an eye on e-bay, to get some idea of second-hand prices - there are always a few for sale. If you're lucky, they occasionally go cheap (around £100-£125 would be cheap), but good ones usually run to £250+
With just the Webers? Dunno, to be honest, I'm not a Pinto expert, but I'd just you might pick up 10-15bhp extra with just the carbs, correctly jetted, and no other mods.
You really need to get a balanced set of modifications (carbs, cam, ported head,ignition), then you can expect maybe 155bhp from the engine. A single modification on its own never makes much of a difference.
You really need to get a balanced set of modifications (carbs, cam, ported head,ignition), then you can expect maybe 155bhp from the engine. A single modification on its own never makes much of a difference.
Edited by Sam_68 on Wednesday 3rd September 21:59
OK, as a single carb I think the 2 litre was rated at 105bhp standard and I'd guess that you might get 130bhp with tuning on a single carb (correctly jetted) before you run out of air flow.
... but I'd say again that I'm no expert on the Pinto - I'm a suspension specialist rather than an engine specialist, and the Pinto is one of my least favourite engines, so I've not had much to do with them.
Someone else will be along soon who can give more accurate advice, I'm sure.
... but I'd say again that I'm no expert on the Pinto - I'm a suspension specialist rather than an engine specialist, and the Pinto is one of my least favourite engines, so I've not had much to do with them.
Someone else will be along soon who can give more accurate advice, I'm sure.
Sssline said:
If it helps - A single 38dgas downdraft carb on a 2.0 pinto will flow sufficient air to achieve around the 150bhp max, with suitable other mods, also a lot more economical than side draughts, another thought might be bike carbs, which seem very popular.
thanks for that...what would the power be on a 1.8 pinto?putting webers on a standard (pinto) engine does the following:
increase fuel-consumption, increase noise-level, loose low torque. thats it!!!!
check out on the burtonpower homepage..or even better get the catalogue from them:
all the tuning details are explained...and espc. for the pinto its said that:
The 2 litre heads have massive ports to start with so good gains can be had by merely fitting a Kent FR32. Even the best standard Pinto carb a 32/36 DGAV twin choke, is enough to power the engine to 135bhp.....
...After this level, the next step is side draughts and it’s best to go straight to 45 DCOEs since the inlet ports are huge. 44 IDF down draughts are a good alternative, but they are much more expensive.
also buying "some" carburators does not mean that they are setup for your engine...the correct jetting, venturis etc. can be find ouzt only on a rolling road..and this is the thing what costs money...at the end you bought some "cheap" ebay carbs and do need an expensive full set of jets and venturis...
and i´m sure that minimum 70% of the kitcar-users run their cars with an unknown carb-setup..therefore waste fuel and waste engine-power.
increase fuel-consumption, increase noise-level, loose low torque. thats it!!!!
check out on the burtonpower homepage..or even better get the catalogue from them:
all the tuning details are explained...and espc. for the pinto its said that:
The 2 litre heads have massive ports to start with so good gains can be had by merely fitting a Kent FR32. Even the best standard Pinto carb a 32/36 DGAV twin choke, is enough to power the engine to 135bhp.....
...After this level, the next step is side draughts and it’s best to go straight to 45 DCOEs since the inlet ports are huge. 44 IDF down draughts are a good alternative, but they are much more expensive.
also buying "some" carburators does not mean that they are setup for your engine...the correct jetting, venturis etc. can be find ouzt only on a rolling road..and this is the thing what costs money...at the end you bought some "cheap" ebay carbs and do need an expensive full set of jets and venturis...
and i´m sure that minimum 70% of the kitcar-users run their cars with an unknown carb-setup..therefore waste fuel and waste engine-power.
Edited by Comadis on Thursday 11th September 23:35
and the first step in engine tuning (which more or less costs nothing..besides some hours work and a few gaskets) is:
disassemble the engine and balance all parts. bring all pistons, incl. conrods on same weight, polish the conrods, polish the crank, balance the crank together with flywheel, evtl. lighten the flywheel.
when putting the parts togehter check that the ports of the head perfectly match with the ports in the manifolds. burring all parts.
and finaly increase the compression ratio by decking the head or the block
if you like you can put all together now..and i´m sure you gain 10-15horsepower,also a much smoother and lively reving engine.
these are the basics...without having done this, forget all further tuning.
disassemble the engine and balance all parts. bring all pistons, incl. conrods on same weight, polish the conrods, polish the crank, balance the crank together with flywheel, evtl. lighten the flywheel.
when putting the parts togehter check that the ports of the head perfectly match with the ports in the manifolds. burring all parts.
and finaly increase the compression ratio by decking the head or the block
if you like you can put all together now..and i´m sure you gain 10-15horsepower,also a much smoother and lively reving engine.
these are the basics...without having done this, forget all further tuning.
I once spent a lot of £££'s to put twin 40's on a Pinto, had then rolling road set up as well. They lasted 1 month, then I took them off. The drivabilty was crap! it was like one of those taps that you press, All or nothing. the fuel consumption was under 20 mpg.
Either go for a good weber 38DGAS, or bike carbs as suggested (Yam R1) but to get good results from them, you'll need to fit a performance cam, the FR32 gives more power, and is still drivable. you will also need to alter the ignition curve of the distributer to suite the cam. You can do that yourself (I've done it) or you can get a reconditioned dizzy that is modified to suite.
General mpg with the 40's was under 20mpg. with the 38 DGAS was 30 mpg (both with FR32 cam, dizzy etc)
Why do you think there's so many sets of webers with manifold for Pinto for sale on e-bay? Because they are crap on the Pinto!
Go and have a look here. http://hometown.aol.com/dvandrews/
Although Dave had a Robin Hood, and a lot of people don't like them, he is a guru when it comes to engines.
Either go for a good weber 38DGAS, or bike carbs as suggested (Yam R1) but to get good results from them, you'll need to fit a performance cam, the FR32 gives more power, and is still drivable. you will also need to alter the ignition curve of the distributer to suite the cam. You can do that yourself (I've done it) or you can get a reconditioned dizzy that is modified to suite.
General mpg with the 40's was under 20mpg. with the 38 DGAS was 30 mpg (both with FR32 cam, dizzy etc)
Why do you think there's so many sets of webers with manifold for Pinto for sale on e-bay? Because they are crap on the Pinto!
Go and have a look here. http://hometown.aol.com/dvandrews/
Although Dave had a Robin Hood, and a lot of people don't like them, he is a guru when it comes to engines.
Edited by Gafferjim on Thursday 11th September 23:39
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