Gutless after rebuild

[Flare]

Hi all, I'm at my wit's end here, I just rebuilt a perfectly running 1600 to a 1776. The combo I'm running is 90.5mm pistons, 69mm VW crank, dp heads, Engle 110, and dual Solex 34 Pict 3 carbs with 130 main jets, electronic points and a 009 dizzy. I'm confident that the tappet timing is correct. Note, this is my first engine build also. I have managed to get the car running alright after quite a bit of tweaking of the carbs and dizzy - I managed today to get it running relatively nicely and when I took it down the road it was totally gutless. Would anyone be able to give me an idea where i f***d up?

[MURZI]

Dual solex 34 pict 3's?

Double check your timing. Make sure at TDC you are firing #1. Rockers for number 3 should be open at TDC.

Should pull pretty hard with that combo.
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62 vert
2276
Tim’s welded heads
45 Dells
A1 sidewinder
Fk44 cam

[TinCanFab]

[mark tucker]

[[email protected]]

dual 34 PICTs, or PDSITs? The 34 PDSITs come with puny 22mm venturis, those are too small for a 1200.

http://vwparts.aircooled.net/34mm-PDSIT-Solex-Venturi-28mm-EACH-p/34-pdsit-28mm-venturi.htm
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[Brian_e]

Make sure you are getting 100% full throttle on both carbs.

[Flare]

Calculated compression ratio is 8:1 but haven't got a compression tester - may have to invest in one.

When i was trying to get it to run properly it was backfiring and just generally running like crap. The plugs are 180 around also. Could i have put the cam in incorrectly - I honestly only found out about the dots on the gears after re-assembly. Used feeler gauges before the engine was pulled apart against a lobe and lifter to get what im using.

Yes, it is a 34 pict 3! i had two laying about and a local guy had an empi manifold to suit for it. I coulnd't find too info much on this combo really.

jets installed:
Idle 55
Main 130 (have two 134 jets and a single 145 to play with)

Sprayed around the manifolds with ether and it dosen't seem to be sucking air. definatly getting full throttle.

The engine seems to rev but it dosen't pull. i was in 3rd gear pushing 50kph

Ill have to check the rockers when i get home from work.

[Dale M.]

[Flare]

Thanks Dale, Starting to restore a little confidence. That's that image I went off to double check the cam when putting it in. If it was 180 wrong would it possibly fire but run badly?

[Danwvw]

I bet it's the Dual PICT 34's Probably set up way wrong. Best to just get some real carbs for it. That engine would roar dual IDF's or DRLA's
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths!

[Flare]

Defanatly planning on getting some decent carbs in it but the budget dosen't allow at the moment. May just have to bite the bullet and get some if i can't get this running reasonably

[Danwvw]

you could do dual Dellortos for a lot less. These are a little big but if you put 30mm venturi's in them they would match your build pretty well. Does your engine have oversized intake valves?
http://www.thesamba.com/vw/classifieds/detail.php?id=1925947
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths!

[mark tucker]

so just how bad does a 180 out cam run? mine runs just fine......how exzactly do you get cam 180 out? and what differance does it make ? none. it starten to sound and look like you need to find somebody local that can help you. we can give suggestions but if you do not under stand they do no good. is it running on all 4 cylinders? are the valves adjusted right? is the cam degreed right? off a tooth will still run in most instances.some even more.and depending on witch way it's off. fix it befor it kills it's self.

[modok]

[Lingwendil]

I want to see too! I love dual stocker setups. I'd love to see which manifolds and linkage it's using. I've toyed with the idea for a while, and had dual 30PICT3s on a 40 horse a while back, that sucker was smooooooth....

I bet the 34PICTs have different flange numbers and are plumbed a bit differentlty internally, or need some jetting help.
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[Flare]

Thanks a lot for everyone's comments. I spent some time this afternoon reaming the jets and am feeling the engine drastically change for the better. before the jet change it was running a lot rougher than what i actually thought. now it purs without missing.

Ill see if i can get some images for people interested.

[mark tucker]

bore the vents, bigger jets, bigger airs.....then on to some idf's

[Patrickvw]

What muffler system are you using

[mcmscott]

Might want to get rid of this dizzy thing and start with a distributor, then figure out how to set timing, You can not br any where acurate with a "dizzy"
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[Flare]

Using a GT style muffler

Haha - MCMScott - Timing makes me feel dizzy /s

Images for anyone interested in the dual carb setup - only took pics of one side. Ignore the messy engine bay and lack of tinware - that's getting worked on.
http://imgur.com/a/Ck2QS

Also to let everyone know after a weekend of tweaking the thing runs like a champ now!