Okrasa crankshaft with Judson

[vabole.lv]

Hi, guys!

I'm not new to thesamba.com, but I've been silent for some time. I already tried to start a discussion about the engine under the oval beetle forum, but somehow... didn't get any response. So this is my take number two

The thing is I have an end of '56 VW convertible with a matching numbers engine, I have been driving for some time, but now doing full resto. And it turns out that after splitting the case my crankshaft is a bit damaged with most of the dowels gone. So it needs a replacement

At the same time, I got a full set of Judson supercharger which I'm intended to use. And since it's much easier to get a 69.5 mm Okrasa-style crankshaft than an original 64, I'm wondering - is it a way to go? And if yes, which connecting rods would fit along (NOS is also hard to spot).

Found few relevant topics here, but none of them gets to the answer. Still have some 100 tabs open. So this is my hope to get a few shortcuts. Maybe someone already has done that and can share some engine specs

Thanks in advance,
Peteris from Latvia
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'57 convertible '67 beetle

[vabole.lv]

It seems very hard to get some attention here, but I will continue to ping until I get pong Especially that I'm in the right mood - got almost all the pieces together - pan is ready for assembly and the body is the opposite - almost disassembled and ready to visit sandblasting and then - the paint shop.

But, regarding the engine.....
Went through almost everything in Samba forums (yes, yes, there is a chance that something has been missed due to the fact that English is not my native language and maybe I'm using the wrong keywords).

So here's my initial setup:
- Okrasa 69.5 mm counterweight crankshaft (actually the only counterweight available, my original is damaged and hard to repair)
- Okrasa dual port heads (mines are cracked, big risk of them falling apart)
- Custom-made manifold - from Judson to dual port heads - will use the principle of Okrasa manifolds, but all welded to bigger intake connecting to Judson, keeping the old vintage style look)
- Abarth exhaust (been sitting on a shelf for some time)

Still haven't figure out:
- Engle or Okrasa camshaft - more reading needed
- Connecting rods - seems like there are not many options, I guess will have to stick to the stock
- Rockers - also need to read more or go through different setups....

Not sure how much time will be needed to assemble this, but I hope 2023 will be the year when I finally will hit the streets
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'57 convertible '67 beetle

[scotty timmerman]

-I dont think ive seen a cam made for 36hp from engle. A 36hp cam is diffrent from a type one cam.

-H-beam rods can be purchased from aaperformance for either 20 or 22mm pin. https://aapistons.com/collections/connecting-rods/...type-36-hp

-AAperformance offers 1.15:1 ratio rockers that fit the stock rocker shafts. they are smaller diameter then type 1. they also offer solid lifters for cut to length pushrods. speedwell offers 1.25:1 and 1.4:1 ratio rockers.
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71 ghia coupe: Build thread http://www.thesamba.com/vw/forum/viewtopic.php?t=511738&highlight=
71 type 3 fastback auto
71 type 3 fastback manual
73 super beetle
57 oval: build thread: https://www.thesamba.com/vw/forum/viewtopic.php?p=8616563#8616563
63 beetle reassembly: http://www.thesamba.com/vw/forum/viewtopic.php?p=7458619#7458619
2332cc engine build: https://www.thesamba.com/vw/forum/viewtopic.php?p=8608429&highlight=#8608429
84 vanagon westfalia wolfsburg edition

[vabole.lv]

Hi!

First of all, thank you for rod link - didn't know such site. Here in Europe we more stick to Paruzzi, CSP or VW Heritage.
Regarding camshaft, I'm currently looking at this one - for 36 hp engine
https://www.bbt4vw.com/en/catalogue/5-engine/2-low...sa-style-/
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'57 convertible '67 beetle

[PatJr]

there seems to be a good sized budget behind this
can you fit up a regular 1600 and trans in the frame?
set the original parts aside for a museum

and do post lots of motor porn during your build please

imho
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1970 Transporter a orange one
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[Alstrup]

Unless you have already bought parts, stop right there, and answer a qouple of questions.
1. Are you buying Okrasa copy parts because you need to replace worn out stock parts or because you want a better running engine with more grunt(power)?
2. There are several places to get good parts for the 30 hp. If you want a nice and powerfull engine you need to diversify your purchases to several shops/persons.
3. If it is a show car or a city car you can use the Judson. If you intend to put some kms on the engine (long distance) I would advise against installing the Judson. Too many problems with them.
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https://www.thesamba.com/vw/forum/viewtopic.php?t=435993

[vabole.lv]

[vabole.lv]

[PatJr]

wow
that is some nice looking bus

looking forward to any build pic you post

(couldn't find a peace sign)
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1970 Transporter a orange one
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[[email protected]]

Your better off just building the okrasa dual carbs instead of the okrasa/ judson combination you will most likely over drive the judson and time for rebuild....there's a reason why you hardly see judsons around and if you do it's mostly on stock 1200cc engines on show cars ...most folks over Rev and over drive those judson in which they rattle ..everybody think that ohh its a supercharger/ blower I can Rev it but in reality a juson wasn't intended for that type of usage and most folks over rev them judson because their engines are not build for its usage meaning there engines are to powerfull for that restrictor blower in which the engine wants to breath more but the judson it holding it back ...some folks use to try the judson with the 69.5 cranks but found out it didn't do much they found better results with dual carbs ...a pepco/ speedwell supercharger is better than the judson some folks have tried your combination okrasa/ supercharger setup but with the pepco/ speedwell it little results as well but say it was better than the judson/ okrasa setup ....but found out dual carbs was the way to go it gots better power and cost way cheaper ...but if that what you want to build hey go for it if you just want the look thing a judson does get looks at a show since you hardly see them but it's just a look thing lol ...if your looking for power go with the okrasa 69.5 crank 80mm or even 83mm bore and zenith 32 ndix carbs that's the simple setup unless you go out the simple way and add larger valves to the okrasa heads port polish, porsche 74mm crank ,rods, performance cam, dual 40mm carbs so on so on ....there are so many ways to go in a 36hp build its not even funny there are so many setups to go ...a judson your basically limited on what you can or can't do it's a head ach....I remember a guy did a dyno test on a stock 36hp and than there at the dyno place he installed the judson and dynoed it the stock engine gave more hp lol the judson made less he than did it again that day both setups on same stock engine judson still gave less hp but had more torque but every little .... judson gives torque and by you installing a 69.5 crank thats more torque ... you want torque and hp in which dual carbs give both with big bore ....you cant big bore a judson because it's restricted " engines is to big for that small blower " in which for you to give the engine the power it needs you will be over driving it and wear it down.... you have 2 power setups that are not good together but are good/ better by themselfs ...but to all reach its own if that's your dream setup go for it if your thinking of making the cheaper / better setup okrasa dual carbs setup is it ...but if you want torque just keep the stock 1200cc judson setup as is and enjoy it as is ... why spend extra unless it's all about look how much I'm spending " bragging rights " ....