Race with original heads

[streetvwnorr]

Dont throw away your original heads. Just port them and put them back in you bracker racer and you will have a cheap pair of heads that will give you plenty of fun. Take a look att my bracket racer with 1835cc with original heads (35x32). This engine dont have all the fancy parts, but it will pull to 8500rpm and it will not leave you with big holes in you wallet. 11/6 i will go to the local strip (Pite/sweden) an get a timeslip. Then we will se!

http://www.streetvw.se/filmer/ready.wmv

//Markus

[Rasser]

What cam and carbs are you using ?.....

[streetvwnorr]

Its a bugpack  dur. 296 and .413 lobelift. Carbs are dellorto 48´s trijet with 38mm venturi and 190 air, 165 mainjet.

Look at my homepage for car & engine spec.

//Markus

[Jon]

You have a very interesting project going there Markus! Report back with the results...

[streetvwnorr]

i will sure do!

[Lee.C]

Sounds awsome dude  whats your compression ratio?

[streetvwnorr]

The combustion chamber measures 45cc, so plus the squish (1,4mm) the compression ration comes to app. 9,5:1. To next year i probably will try higher compression and racefuel.

[Speed-demon]

Impressive videos!!!!

[streetvwnorr]

Thanks! One of the reasons to why a started this subject is that most of us that are into vw´s are forgetting the excellent quality of original vw parts. I think that most of the street power vw´s can do with original parts. When you are steping up to full race, then thinks get diffrent. Just to show my point i will race this seson with ported Original heads (35x32). Many of the younger vwfeaks that i talk to, think that they must put expensive parts into there engine. Ok,it doesnt sounds so cool to say -I got original rod, crank & heads i my pan. But hey! It will save you mony and will get you going! 11/6 i will get a timeslip!!!

[Rasser]

8500 rpm with stock crank

[streetvwnorr]

Its a stockcrank with welded counterweight. But to race with that kind of rpm, it demands that i tear down the engine after every season and rebuild it.

[streetvwnorr]

Ported original heads are a success! 13,33s and a 60-fot 1,70s! Look at the clip and make you own opinion about the original heads potential!
http://www.streetvw.se/filmer/pite.wmv

[streetvwnorr]

Got hold of a picture from a spectator!

[Jon]

Wow, impressive! There's an even better time hidden in that 60 ft!

[Mangokid]

Once upon a time...

A few years ago i was looking through my old bin of rusty worn out parts when i came over a pair of great looking stock 1600 twin ports. I took 'em to a machine shop for some wild flycutting and put them on a close to stock 1600ccm engine with a 276 engle cam and one twin 40mm weber. The crank was left in stock condition an no porting was ever done, but i had it 8-doweled, and i threw in a set of "EMPI" valve springs for good measure, and of course some rusty headers and a glasspack muffler.

The result speaks for itself. 15,6 on the q-mile. Still got the timeslip from SCC#1 at gardermoen Raceway "Oslo" Norway for proof, i think. Car was a full bodied 1961 cal-looker on 356 steel wheels. There is plenty of potential in those heads, an for how much money? Close to nothing. Don't ever scrap a pair of, even worn stock double-port heads.

[streetvwnorr]

Thats what i mean!! It would be wery interesting to know how much it would do if you ported the heads. How much did you flycut them? Just another proof that you can do some fast times with original heads. Very Impressive!!! I dont think that cb044 are a bad  choice. But a think that people are forgetting the roots of powertuning vw´s. I meet guys that dont dare to show up at the strip, beacuse they dont have the right stuff. Keep up the good work! And keep question!

//Markus

[Mangokid]

I really don't remember how much we cut those heads and i've never measured the combustion chambers, but the guy with the mill meant thet we went way to far and that they eventually would crack. I ran 'em for years in my streetcar, and they're still alive, now in my dad's super low-budget racecar, "The Turtle Bug".

Maybe i should pull 'em and do some porting just for the fun of it, and at the same time increase the volume on the engine, from 1600ccm to 1680? Whats your opinion on that, and what camshaft? The crank is balanced, but the flywheel is stock weight. Car is very lightweight with no rollcage.

 I ported a pair of heads, (my first ones) per instructions from the "Lo Bugget" website last ear, but haven't had them flowed. Wouldn't call myself an expert, not even an amateur, but hell, it's fun to make cheap stuff work. Or at least imagine that it works

[streetvwnorr]

I am also an beginner concerning porting. I build my self an flowbench so i colud se what every interference did to the flow. With non experience, i increase the flow with 30% on both intake an exhaust. Dont imagine! It works! To next year a will try to port more. The exhausport is untouched, original diameter.I just portet under the seat and combustionchamber. So there there is some more flow to find. But i want to keep the gas velocity high. I believe thats good. And another area to look in to is valve shape and valveseat work (3 angel work). I havent don anything to that, its org. 45 deg. seat and org. valves. So there i also some flow to fetch!

[Mangokid]

Very interesting indeed!

On the last pair of heads i ported, i also reshaped the combustion chambers to look more like those on a pair of 044's i had lying around. As i don't have a flowbench or any proper gear to measure and calculate, it's mostly trial and error the slow way. Do you have any pictures of the 1835 heads of yours to show?

[streetvwnorr]

Here are some pics!

[streetvwnorr]

One more!

[Speed-demon]

What is the weight of Your car?

Don't Yo think You would be better off with ERCO's or some other light weight wheels? I have heard that the weight of the rotating mass in wheels can play quite a large role in Dragracing. Any thoughts about that?

Keep up the good work!!!

[Roman]

Ercos are light but the stock steel wheels are not that bad actually. I guess the BRM copycats ar made in an Aluminum-Lead alloy.
Your work is impressive!

[streetvwnorr]

The car weight app. 670Kg/1470lbs. Ye, i would put some Erco´s on my car, but am also a familyfader. Its all about money! I think thats the reason why i started this investigation on the org. vw head. I think that this engine can push my car into the 12´s. I have to practise launch the car right! I talkt to A J Sims and he gave me some tip. I will give it another try at Pite dragway/ North of Sweden 7-9/7.

//Markus

[streetvwnorr]

It struck me here the other day that my local strip, Pite dragway, must be the world most northerly located strip in the world. If we take Anchorage,Canada as a reference point at latitude 61n, then Pite dragway is located further north at latitude 65n. Or do you know of any other strip?

To get the picture follow this link.

http://www.astro.com/cgi/ade.cgi?&spli=Pite%E5%2CSWED%2C21e30%2C65n20%2Cf%2C2326%2C2325%2C0&snam=now&fromaq=aq&sprev0=%2C%2C

//Markus

[Mangokid]

Perhaps weather conditions are more suited for hard launches and good quartermileage up north?

Inspired by your pics and posts i returned to an old abandoned portingproject in my dads basement the other day. Reshaping comb-chambers and straightening x-ports. Too bad i don't have a camera. Not that i god something to teach you, but "all experience and knowledge", and so on.

[streetvwnorr]

Yea! Up here noth we have good conditions for many things! Now i´m just waiting for next racedate, 7-9/7. Will change to other tires (some old rallyslicks, in better conditions than the tires that are on now!) but leave the rest untouched!

// Markus

[streetvwnorr]

The weekend when everything whent wrong!! a 13,40 pass was all i could perform! I think that i pulled all the gears to high in the rpm conserning my cam. I got the opportunity the weight my car on a good scale. And to my surprise the car weigh 591kg/1298lbs! Its a lightweight! Good for 1/4 times! But i is pretty sensitive sidewind. I got a taste of i last race!!!! And finally i got my self a projekt for the winter. im planing to build my self a inertia dyno. Got hold of two railway vagnon wheels! I will come back white some more info aboute the dyno! Excuse my English, i have been drinking some beer! Good bye!

[streetvwnorr]

13,26 with org. heads!!! I would like to thank Hans Dahlen & Kent Sehlkvist for there help this weekend! But now its time for hibernation. So, last i would like to share this clip with you. "Orginal parts are not not despise"

http://www.streetvw.se/filmer/pite060827.wmv

//Markus

[streetvwnorr]

Its pretty mutch the same for me. Have an old house that demands some work on it & a loving family. But this thinks cost! But hey, you wouldent want to live without them. I think thats what put me in this corner (Cheap and fast) If i had the mony? Probebly there would be an bigger engine sitting in the back.