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Thu Jun 09, 2005 12:05 am

vdubjim wrote: how about these wierd heads i scored, no markings other than the stock vw ones. Homemade? Prototype? i dunno, should be cool.

356 pre a heads :twisted:

:shock:

you can get 35mm intake valves in there and 33mm exhaust valves in there with differt seats, and you buy the correct valves you get them less then $10.00 each. They are not a direct plug and play, but you can get them to work for less then 1hr of mill work.

valve springs form a moris 1200 will dorp in and have a higher spring tension.

now if I could only get the pre a piston liners redone with out costing $1000.00

this is something I cracked dreamed about when I worked with Ray 8 years ago, and now with more money and time it is time to bring this out of the wood works. I will try to post some other past work before the classic weekend.

Sat Jul 02, 2005 1:54 am

I'm following this topic for a time now, and I'm searching for someone who can make me a large inlet and big valved 36hp head.

there are some impressive pic's of mr.motorheads modified heads,
is there someone outthere who can make these for me??

I'm building a 36hp with 83mm cilinders a okrasa cam and a type 1 judson charger I'm using a judson magneto an a porsche 010 distributor.
Because of these chances i need some wild head, okrasa or denzel is an option, but not really$$$
it is ore fun to have some home made wild heads.

Sat Jul 02, 2005 9:11 am

Sorry for the delay, I lost the transmission in the car going to the classic so I sort of put it out of my mind.

As for making big valve 36hp heads, Most machine shops will do it but they don't want to spend the time looking up the valve seats. I took my 36 heads to the machine shop and the had them done in less the 2 hours because it was a friday and the end of the month so the boss wanted all the work out for the month he could. I also already had the valve seats so I was a step ahead so they could get it done

I have all the spec for the valve seat around here I will have to look them up (with a 3 day weekend maybe I can do it).

here is the 35mm intake and the 32mm exhaust

and both cylinders done, no other head work has been done at this time.

and some cut away shots for us to see what could be done

and this is the cut away head that we installed intake valves in and set the head up fo exhaust valve seats just too see what could be squeesed in there. This was done 10 years agao so valve seat are even smaller now and you can get a modified seats that are even shorter now. So you would not have to take off all the meat of the head now. I n the new valve seat book I have you could get 37mm intake seats, but not a bigger exhaust seat YET!

Sat Jul 02, 2005 1:39 pm

nice job and great cut out so you can see the inside,
but is it any good to do
only the bigger valves and not ported in inlet port???
The inlet looks (To me) too small to get the full use of the bigger (inlet/outlet) valves.

Wed Jul 20, 2005 9:02 pm

im gladd i see im not the only one interested in this, i was just about to post a thread when i saw this one, i have a couple extra 36 cases sitting around and thought after i rebuild a stock motor i would like to trick out one of the other ones to play with.
my knowledge of bugs has been till now limited to 64 and up and have no knowledge of split case tranny's and the down falls, hell ive never even drivin using one. can some one please tell a bit of the pros and cons of these tranny's ??

Wed Aug 03, 2005 3:15 am

Cool thread! I'm in completely the wrong part of the world to compete, but I'm very interested nonetheless! Has anyone though of turbocharging a 36 hp motor?

One of the guys I race with got a 1500 single port motor, seized, for £20 (about $35), filled the bores with diesel for a week then cranked it over with a breaker bar. It fired and ran, so he put a Renault 5 Turbo and carb on it. He upped the boost and on the www.raceshack.com dyno it produced about 90bhp at the wheels and 80+ lbs of torque if my memory is correct. Runs in a Fugitive (Chenowth style) rail, and runs 15.3 second 1/4 mile.

Worth a go with a 36 horser?

Sun Aug 07, 2005 4:47 pm

tommy-turtle wrote: vdubjim wrote: how about these wierd heads i scored, no markings other than the stock vw ones. Homemade? Prototype? i dunno, should be cool.

356 pre a heads :twisted:

:shock:

with round exhaust ports??? :twisted: :twisted:

Mon Sep 05, 2005 5:28 pm

You can count me in, I've been racking up some parts I hope to have it done for the Bakersfield show in March.

Sat Sep 10, 2005 7:03 pm

Well I have a roller now, I picked up a 58 yesterday it's complete but in boxes. I'll be working on it this winter to have it ready for summer. I was wondering if anyone has started working on their 36hp case drag car yet? This is what I have to work with, I'm tring to keep it on the cheap and old school theme as well.

Sat Sep 17, 2005 8:47 pm

Good Job Street Sweeper I should have pics of my "freebie" soon!

Thu Sep 22, 2005 1:35 pm

We've been making locking differentials for the Porsche 356 for a number of years. These may be just the ticket, if you guys are stuck using the VW crashbox trans in the proposed 36hp class ---

Fri Sep 23, 2005 11:25 pm

Any idea of the value of a 1300 or 1500 DENZEL engine working condition complete with cyclon airfilters?

Or more information about it , cant find anything in the WEb?
Just in Making the VW go p85to p92 and a little in souping the vw and HOTVW july 96. anything else?

Thanks

Omar

Mon Oct 03, 2005 10:19 pm

hey guys, i just found this thread and i have some questions. i just picked up a "junk" 36 hp shortblock that turns freely, and want to build it up over the winter in my spare time. i was thinking, instead of going stock, that i would try and build an "okrasa" worthy motor and just keep it around as shop art.

now that i see there is a big interest in these old motors, i'm thinking of actually using the motor and seeing what i can do with it.

now, heres the part where i sound really stupid. i ahve never built a custom motor, and have no idea what a real okrasa motor has in it (i just know the name and the prestige). what sort of internals and sizes am i looking for? what are the valve sizes and cuts, and pistons, and crank, and all that. i know i sound like a newb, but i am.

also, how hard would it be to fab up some manifolds and linkage to run dual 28 picts, and, using stock oil bath filters, would it fit in an oval without too much modification?

thanks,
jim

Thu Nov 10, 2005 4:43 am

What happened to this thread?
Too many secrets?
Or not enough interest?
36hp case + 74mm stroke + 86mm barrels = 250 degree oil temp.
Back to the drawing board....
Later,
Al

Fri Dec 09, 2005 4:22 am

Check out the "highly restrictive" banjo fittings this idiot installed; and obviously incorrect.
Al

Mon Dec 12, 2005 7:00 pm

OMT wrote: What happened to this thread?
Too many secrets?
Or not enough interest?
36hp case + 74mm stroke + 86mm barrels = 250 degree oil temp.
Back to the drawing board....
Later,
Al
You are not going to get 86mm barrels in a 36hp case without relocating them. It seems a lot of work for an extra 2.5mm.

-Craig

Mon Dec 12, 2005 10:25 pm

Even if you did relocate the studs and run the 86's it's a quarter mile drag race, I seriously doubt the engine would be running long enough to get to 250 degrees but if you did all that engine work wouldn't you also have a deep sump and a few other tricks to keep the oil cool???

Tue Dec 13, 2005 7:13 am

I run roughly that engine already in my split Okrasa 69x83.5 and it runs a little warm but nowhere near 250 even on the hottest days. 220 is about max I have seen on extended high speed runs at 80+mph and 90+ ambient air temp. I do not run an oil sump this probably would help a little bit to absorb the temporary heat variances.
I am removing my split fan shroud and using a 36 hp shroud with a latter 1600 fan to draw more air. I found that helped about 5-10deg with my Judson engine.

I am gathering the parts now for a 74 x 83.5 36hp engine, with as many tricks as I can put in it. I am hoping to do some extensive head work and maybe run my Judson on it.

I know I am limited on flow through these heads any ideas of what CFM I could get these heads and any recommendations on who to do it?

I would like to try my hand but I have no flow bench and limited experience any good texts on this?

-Craig

Tue Dec 13, 2005 6:28 pm

Hello Craig,
How fast were you going and for how long. My engine is 1720, we had a hot spell in L.A. about 3 months ago. Using this combination on the freeway I got the oil temp up to 250 degrees going 90mph. This was for short bursts. Temp went down to 220 when cruising at about 65mph.
But this is what it's all about...R&D.
Al

Mon Jan 23, 2006 10:52 am

I’m involved in the building of a 36 HP engines for a class 1 land speed racing. For class 1, the motors must be stock appearing 36 HP, fan shroud with functioning generator and fan, standard pulley, etc. with single 28 PIC carburetor, and no external modification except exhaust system, air cleaner, distributor and coil which are open.

Here is the real challenging part; you can do anything you want inside the engine. What would you do? Perhaps make the engine a real big motor like 16-1700 cc, stroker crank, etc. and rely on torque to get more top speed. Or, perhaps make it a 1300 cc and very high compression because it has to breath through one 28 PCI carburetor. Another option would be to make it similar to a pro F-Vee motor with all their little tricks. Actually, when you think about it, it is an antique restrictor plate motor with the 28 PIC as the restrictor.

The goal is a standing mile top speed in an all steel type 1 sedan or convertible with steel fenders, bumpers, lights in place. This is for a street legal VW, with a current license, insurance and doesn’t have to be a race car that anyone could do with a 36 HP motor and some thought & ingenuity. These speed events are going to happen at Bonneville USFRA (Utah Salt Flat Racers Assoc.) in Wendover, UT meets, ECTA (East coast Timing Assoc.) in Maxton, NC meets or the Texas LSR (Land speed Racers) in ? , Texas meets. There are going to be other classes for vintage supercharged , (ie: Judson, Pepco, etc. Okrasa and even turbo 36 HP which is called 2006 New Age 36’ers).

It is not financially rewarding, you only get bragging rights if you have legitimate timing slips showing that you have the fastest 36 HP VW in the country.

BvilleTom