135 HP with a 34PICT?

[gitchesum]

Recently I saw a sleeper VW on this site...a video...that had like 135 HP with a 34PICT?
I wouldn't mind building something similar. I am finishing up a 1956cc and have some 40 Webers, and also some Kadrons that I could put on it....However that sleeper look totally intrigues me.
Where did I see that and any thoughts...Tuning issues, what dizzy would I run ?
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Looking for SP Kadron manifolds...please !!



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And various VW's that come and go...

[Glenn]

I can't see how it's possible to get 135hp with such a small carb.

sorry, i call BS.
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[mcmscott]

or a dizzy

[74 Thing]

Read this thread and contact Torben in Germany (Alstrup is his samba name)...
http://www.thesamba.com/vw/forum/viewtopic.php?t=499235&highlight=pict

[Alstrup]

Actually I´m from Denmark

But germany is close by

135 hp is pushing it. The restrictor is not the carb but the endpieces. I´m tempted to say that it can not be done with stock end pieces.

120 hp can be achieved with a lot of time to the combo.

T

[NJ John]

Im guessing pretty high compression, too.
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[mark tucker]

dizzy crabs riding a dynosourous chasing some 130 horses that are trying to not be lunch.
I agree with the guy from neer germany , it will take a good bit of work optimizing it and having all the right parts,better end peices,the right heads,cam&exhaust,cc&some crab work.almost any thing is possiable,but why?oh never mind,I should not be asking that with all the stuff I do.

[DarthWeber]

[vwracerdave]

I'll bet there might be a few guys around the world that could get 135 HP out of a 34 PICT carb, but it would be a extreamly expensive custom engine and nothing your going to be able to do with over the counter parts.
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[Quokka42]

As Alstrup pointed out - not with a stock manifold assembly, unless it's a blow-through turbo... You just can't flow air through a pipe quick enough.

I was pretty impressed at the 120hp claim, but I am sure this was done with changes to the center section of the manifold and probably end-pieces as well.

Remember when you remove the venturi from a carb you not only harm fuel atomisation, you effectively remove the secondary circuit of the carb. You end up with a two-stage carb as there will not be enough vacuum below the non-existant venturi to pull fuel through the progression ports.

I love to see stuff like Alstrup's - exactly the kind of thing I used to do when I was young - but, like the Kadrons, there comes a point when you just have to face up to the need for a larger carb. It will probably be cheaper, though not quite as fun or satisfying than if you go the modification route and do it all yourself.

[skills@eurocarsplus]

you sure it wasn't the guy who went over the top hiding a turbo in his bug? iirc, the turbo piping was run thru the stock airbox via the pre heat tube...i can't seem to find the link
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[gitchesum]

The video I saw showed the engine running on a dyno with the screen in the background....had a lot of power for a single carb...some kind of an engine builder I recall.
_________________
Looking for SP Kadron manifolds...please !!



57 SC
61 rag w/356B brakes
61 356B
Honda XLR 250, 69 Z50, Yamaha 100 Enduro...and others.
GMC SLT 4x4 Dmax
Kubota L3710, not enuf attachments.
And various VW's that come and go...

[Steve Arndt]

Four 34s, easy....

[PEPPE]

[[email protected]]

http://vwparts.aircooled.net/Bugpack-Trick-End-Dual-Port-End-Casting-Kit-p/1557-30.htm

these were used back in the 80s, but have just come back on the market. They solve the end casting "problem", so you can focus your efforts on the heads and carb.
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[vwracerdave]

I remember the old "Station One" trice ends back from the 70's

When did Bugpack start making them again? They are not in my catalog or listed on their website.
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2010 Sportsman ET Champion - Mid-America Dragway - Arkansas City, KS
1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK

[Alstrup]

[Alstrup]

Peppe, on the 120 hp 2275 we use stock end castings, - with A LOT of work to them. No they are not welded, but enlarged all the way through. And that is a PITA (pardon my french) to do. It takes about a full 8 hours to do.

I have tried with hand made 32 mm ID endpieces on a 1914, never on a 2275, yet. The 1914 in the set up I did, lost 8 Nm peak torque, but gained 6 hp @ 4400 rpm and had a good deal more power above peak HP. The owner thought it felt more "fresh" and liked it. Did´nt mind the tradeoff of torque for a more nippy engine. The end pieces were also 1" longer than stock meaning that I had 1" longer isolated runners. That helped a good deal on idle quality.
In those days I chased a 1914 100 hp set up, and got it. But ultimately i went back and developed the 90 hp version a little further instead, because the last 8-10 hp were simply too expensive to gain compared to what the average customer wanted to pay for such an engine.

A 2275 - should - pay well for it too, but as said, I have not explored that yet.

T

[spencerfvee]

hay alstrup theres a guy selling repo trick ends end castings on samba those baby flow a lot of air from 3,000 rpms and up . but they run like crap below 3,000 rpms . i think it can be done 135 hp with a 34 solex carb . but it would not be street friendly in my way of thinking alstrup one could use a holley bug spray carb intake manifold from the 1970s that has a open plenum type manifold . and mount a solex 34 on top of it this would fool the motor into thinking theres a bigger carb feeding it . lol the above worked for me in the 1980s on a dune buggy race car it was a 1600cc motor i ran 14.80s 1/4 mile it had 12.1 CR mallory dizy set up for 14degs intl. all in by 2,500 rpms 32 total i shifted at 7,800 rpm lol some times over 8,000 rpm lol stock crank stock rods stock valve heads DDS end castings it was a lot of fun spencerfvee