2.1 Pinto Weber Carb Choke Shoot Out!
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- čas přidán 9. 09. 2024
- 2.1 Ford Pinto on the engine Dyno!
A clients Pinto you won’t have seen on our Dyno before.
You may notice an issue with the breathing system with oil leaks, we are aware, the owner will be addressing this when the engine goes back into the car.
FULL SPECS:
- 2.1
- 93mm 2.8i pistons
- YB conrods
-10.6 CR
- Big Valve non injection Head
- RL31 Camshaft
- 45 DCOE’s 36/38mm chokes
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Good result that, the head is clearly breathing well to need 38's at that power level. I found a similar gain Graham a few years ago on a 2ltr making 186hp on 36mm chokes...BV head, HT1, 4-2-1.
We only had 40mm chokes to try, a bit big in 45's really, but power jumped to 197 with a lean mixture, followed by 201 with corrected jetting. Could have probably done with 48s mind breaking 200.
Keep up the informative tests Graham, top efforts.
Thank you so much ! What an absolute legend. Now I have a rough idea of what I hope to be pushing on my old donkey ! That view down the carbs was just too tasty for words 🤘🏼
Glad it helped!
Brilliant information yet again. I have a very similar setup to this.. maybe it's time to bin those 36's!
Great test and good gain 👍I see a funky manifold on the first shot too 😀
yeah i ran that one on a different test, it looks fast, but looks can be deceiving
@@PenguinMotors I'm still on a Ashley manifold, so look forward to that shoot out. Could save me some money 😂 So on a 2L with stage 3 head would you recommend 38 chokes?
@@JACKSPEED_TV no not for yours mate yours is fast enough already 🤣
@@FastRust 😂🤣👍
ashley v 3 piece big bore coming soon. the odds are your motor will make more power on 38's but you might find its not as nice to drive lower down the rev range
I've subscribed. I believe the low speed running that can be improved with small chokes is not the steady state power but the driveability in the transients as you come on and off the accelerator. Enjoyed the film, thanks.
for sure smaller chokes improve drivability at low speed and transient throttle, but you can largely get round that by being progressive with the throttle, and lets face it, almost everyone wants the big numbers!
I like your videos. Fortunately we speak the same language, sort of.
When I think of British horsepower I fondly remember my 68 BSA Lightning. Nothing could touch it..... in 1968.
Nice result Graham , you should have thrown a few differnt lenght 40mm - 60mm - and 120mm trumpets in the mix inc belmouths ...
Trouble is I didn’t want to wear out a clients engine!
Great Video Sir, Following the posts on Forum as well.
Awesome, thank you!
Never saw a timing belt go into resonance like that on the Pinto’s I built in the 1980’s. But then, I never reved past 5500 RPM on DCOE 40’s. 😏
yeah normal when you start pushing high rpm
"who wants to be at 3000rpm" 🍻
Loving the 2nd run filming:) is that petrol dripping????
No it’s oil from the breather system which needs modification
The fuel wasn't atomizating at that rpm i think tell the upper end kicked carbs to big probably.
Good test.
Awesome video Thanks! Any chance that you could maybe do a comparison on exhaust manifolds? Branch 4 into 1 and 4/2/1 but I would ideally like to see how the rs2000 manifold squares up. Cheers
by RS2000 manifold you mean an original cast iron mk2 rs twin down pipe one? i dont have one to test. but it used to be regarded as good as the small bore 4,2,1 janspeed manifold on fast road engines. there are some exhaust manifold tests on the way
@@PenguinMotors yes the cast RS manifold. I ported mine out to the size of the gasket on the down pipe and it has improved greatly. Looking forward to the exhaust tests.
@@roygouws7945 if someone wants to lend me an RS2000 manifold with a down pipe i will do a back to back test
These comparison tests are fascinating, Graham. Had you planned on doing any Weber vs Dellorto tests?
no, partly because i dont have any dellortos, but partly because those tests were done back in the 80's. differences were minimal as you would expect from near identical carbs
hello on the 2 liter pinto I am advised to mount a 1600 cylinder head with large valves for more torque my pinto and an RS2000 (NE)
1600 head bumps the compression up a long way and has slightly more material in the short turn making it good for a race 2.0
so, I had an idea, on the 2.0 block (2 liters for the cylinder) mounted a 1.6 crankshaft, for the lightness of the masses, with a 1.8 cylinder head for compression,
@@michelgerard2633 unless your using a 1600 emax crank ( which is same as 2.0) you will reduce the engine capacity and loose power and torque. There no need to re invent the wheel. i do not know what engine spec you have now, but a bit more compression, cam and breathing will give you a lot more torque without trying anything weird
@@PenguinMotors at the moment I just have a full stock RS 2000
My X-Flow 86 mm square engine put out 200 hp and 158 lb/ft.
On Northampton Motorsport's chassis dyno
arhh so you have the illusive 200bhp x/f! want to share the spec?
@@PenguinMotors Do you know :Fast Eddie Griffiths' who did work for Mountune on the YB after David Vizard?
He designed the engine, built by Jon Edwards of JEMS Race Engineering, Daventry.
Carrillo A beam rod's, CP Pistons, Custom Camshaft, Manton Pushrods, 7075 integral rocker cover, AT Power Dry sump oil pump, At throttle bodies (42mm),
Petersen Dry Sump Tank.
60 hours engine build.
1000 hours build on car
@@PenguinMotors 200 hp on Northampton Motorsport's chassis Dyno with flat torque curve.
If we had run the engine at Knight Racing Services (Daventry) the engine would have made 210 hp.
@@PenguinMotors The car was on show at Race Retro Show, Stoneleigh on Northampton Motorsport's stand.
Everyone was looking at the wrong end of the car.... The speed will come from the rear axle.... Handling is key to speed.... Not power
Great video thanks just a quick question is there much difference between 2.0 and 2.1 if they had the same head,cam and carbs
As far as I'm aware it makes very little difference, maybe a small torque increase. I believe people do it when the bore has been scored which is quite common with these engines being over 30 years old now.
in my opinion, it makes very little difference, but at some point i will be doing a back to back test
@@PenguinMotors no problem thanks for the reply I look forward to the video 👍
Is that an Offenhauser or Weiand manifold topped with a Holley 4-bbl I see behind you?
yes it it, it will be going on an engine for testing
Really informative Thanks, can we have a 44idf Vs 45 dcoes vid please
I'd love to but i don't have any IDF's and at the moment i cant justify spending £1000 buying a set just for one test
@@PenguinMotors or even a test of the cheap Chinese carbs on ebay 👍
Another +1 for the 44idf and 48IDF cheap knock offs available for almost nothing on eBay. Several top builders used them on VW bug engines and they make fabulous power
Have you ever compared bike carbs to webbers or dellorto's I've seen bike carburettor on car before but is it worth it.
we will be running this engine up on some bike carbs
Would vacuum balance tubes between cylinders help to reduce that fuel blowing back out the throat of the carburetors?? Can anything be done besides longer air horns??
vac tubes wont do anything, realistically the fuel stand off isnt hurting as it gets sucked back in. longer air horns wont stop it, the may just change the the point at which i happens. you could argue that with a cam revving to about 7,000 rpm, if your at full throttle at 3000 your in the wrong gear!
@@PenguinMotors Is the fuel standoff due to reversion at low RPM? If yes, could this type of footage be useful in choosing cam specs?
@@andrewleonard9257 yes, smaller carbs/chokes would probably reduce it, but it is what you see holding full throttle low rpm with a hot cam. a set of bike carbs on the same engine did exactly same thing
Can you please tell me will a 2.1 run on a 32/36 carb?thanks
yes you can run a 2.1 on a 32/36, top end power wont be great though
@@PenguinMotors ok and would it run smoothly on the 32/36?
@@michaeldunlea3520 at low speed that would depend on the cam