2.1 Dj wbx cam on stock 1.6 dp

[Albertoprop17]

Hi everyone, I'm rebuilding my tired 1.6 dp engine from my 73 superbeetle and the cam gear is worn. I have a spare 2.1 dj cam and I'm thinking to put it on the engine. I'm going to put the 26mm wbx oil pump too.

Other than this, the engine is going to run stock, I'ts going to be a temporal engine because I want to build something bigger (like a type 4) but I need running this engine as soon as possible with the less expense, that's why I thought this setup.

What do you think? Maybe I can put a bugpack header that I have, just I'm not sure where it is

[Albertoprop17]

Although the wasser cam has more lobe heigh (1mm taller) and more duration, both cams look exactly the same.

Do my stock pushrods and rockers work well without modifications? I don't want to cut and adjust the pushrods.

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[H2OSB]

[bugguy1967]

I'd be concerned about the lobe taper meshing properly with the lifters. Do you need a used stock cam? I have some.
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"A petrol engine can start readily, run smoothly and give every appearance of being in good order, without necessarily being in good tune." - Colin Campbell, "The Sportscar Engine"

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[H2OSB]

Oh, cool! So he'll get a nice, free, tiny upgrade.

I, myself don't need any stock cams. I'm building a 1911cc T4 with a Web 86a. That said, I've always been intrigued by cross overs available betwixt the T1 and Wasserboxer. Would love to build either a 1915 T1 with 1.9 Wasser crank, OR a 2110 Oxyboxer, but either of those would require something free to drop into my lap...I'm too cheap to buy the donors needed for either build, much less the machine work needed for a Oxyboxer.

H2OSB

[Albertoprop17]

Thanks guys, I'm going to use the wasser cam, it will give the engine a bit of power and torque, just the little touch that benefits a daily driver.

So I don't need to touch the rocker geometry, right?

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[bugguy1967]

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[bugguy1967]

I meant the convex shape of the lobe which promotes spin to the lifter. If it's the same, then great. So what is the difference between a solid and hydraulic lifter? I've never held either the cam or a hydraulic lifter in my hand. I can only assume the hydraulic cam has a higher flank-acceleration rate.
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"A petrol engine can start readily, run smoothly and give every appearance of being in good order, without necessarily being in good tune." - Colin Campbell, "The Sportscar Engine"

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[H2OSB]

Wow, then it actually sounds like the WBX cam would work nicely as a very mild upgrade.

Lucky (to O.P.)! I don't think I would seek one out if I were doing a refresh of a stock 1600DP, but if I had one on hand, like the O.P., I'd run it!

H2OSB

[Albertoprop17]

Now I remember that I have a pair of 36 dcnf's, maybe I put them properly jetted with an engle 110 or similar cam and the spare header I have, but he wbx cam is still in my mind if I don't run dual carbs

[H2OSB]

I don't know why, but I just think it would be ultra cool to run that cam. Can't wait to hear how it goes for you.

H2OSB

[Alstrup]

A dj cam with solid lifters will work. Dont expect any significant power increase, or torque for that matter. But it will rev higher. The dj cam is ground on 110 lc and in a way so that the engine needs to have some static compression for it to perform. When you look at the numbers it looks "aggressive" but the measures are at 0,39". Also When you swop from hyd to solid lifters you take approx 20 degrees out of the running duration.

Some cams for mechanical lifters work ok to fine with hyd lifters. But not all. Next problem is that many cams are rather inaccurate, and that is really bad if you use hydraulic lifters. Then they can not control the closing time properly, which results in uneven behaviure, loss of power and bad fuel economy.

[H2OSB]

I really just look at it as a stock cam+. Like I said before, I'd not seek it out if I were doing a stock engine refresh, but if I had one on hand, why not...

H2OSB

[Albertoprop17]

Well, I decided to run the dj cam on the engine, everything else stock.

I removed the chamber shims, 0.5 or 1 mm thick, I don't remember it now. This will raise the cr a bit, this will help the engine happiness

Maybe I put a rare Nikki carb and a header on it...

[Albertoprop17]

I've built the engine with the dj cam and it has covered about 1000km with no issues. It's running with a 30/31 carb and a stock exhaust, and it has better response than a stock engine with a 34.

I will rebuild the 34 pict 3 and put a 4-1 header with a bugpack turbo muffler to see how it performs, I'm sure that it will come up with these bolt ons
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