Build question

[KIM-P.]

I bought someone else's project that came with a ready to assemble 1776. The last engine I built was in the mid 80s and it was a 1641 with pocket ported 040 heads W-110 cam and progressive carb that got 32 mpg and was a blast to drive. Now I'm wondering what to expect with this engine. MPG, performance, drivability ?

Heads are Mexican 40x35 that are pocket ported, stiff springs
Cam is a Bug pack 4062 415lift,284dur or W-100
009 or 034 distributer
90.5 pistons and sleeves with these markings 1201 m 0486 and coated skirts
unknown cam followers that are flat black in color
counter weighted 69 crank
stock reconditioned con rods
stock push rods
Carb is a single Dellorto 40 with ported end castings, ported on the carb side for smoother flow not to increase size
I weighed the piston and the con rods and are within 1 gram of each other, piston to piston, rod to rod

This will be a daily driver with mostly highway driving and is going into a 74 bug, I will be replacing the transmission too but not sure if I should go stock or freeway flier. I will not race this car only aggressive on ramp merging.
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[mark tucker]

I would find another carb to match that one or sell it & get a new set of hpmx 40~44's. be sure to deburr the lobes on witch ever cam you choose.I would go with the lower lobe lift&make it up with ratio rockers.

[Danwvw]

I will second the dual carb set-up! It's going to have more torque with dual carbs, Get another Matching Dellorto used cheap! Lots of ad's for them here on the samba: http://www.thesamba.com/vw/classifieds/detail.php?id=1615687

CB-Performance has a kit with off-set manifolds and linkage. bolts up in a few minutes. http://www.cbperformance.com/ProductDetails.asp?ProductCode=3125 Looks like the price has gone up $20 on these linkages since I got mine last year.

The carbs will need to be set-up with the same venturi's etc...

I went to an electric fuel pump with mine!
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths!

[KIM-P.]

I figured the big valve heads would mean dual carbs and from what I've read the single throat dual carbs might not work as well as the dual throat carbs. What kind of gas mileage should expect from the duals?
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[modok]

In your application I would go dual carbs. The single dellorto can be a good setup too but for street/highway use the duals will run better, run cooler, and make more overall power.

[Danwvw]

I was concerned about dual carbs and gas milage when I got the Dellorto 36's on my VW Bus engine. But it's just about the same as it was stock with much more performance. In the bus they have given me a range from 18-24 mpg. But In the bug with those big valve heads and being driven hard it's hard to say but I would guess perhaps 18 to 28 MPG.
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths!

[KIM-P.]

Been doing a lot of reading on proper engine set up and building a reliable engine. Its a lot to take in and I'm amazed anything I built back in the 80s ran at all. So I'm going with the HPMX 40 carbs, a 1.5' merged collector exhaust, the bug pack cam and the 034 dizzy. Of course Ill have to buy a carb syncing tool what syncing tool set up should I purchase?

Thanks for all the advice
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[hooker]

[KIM-P.]

Just pulled my engine case out of storage and was shocked at what looks like dirt embedded into the inside of the case. When I hit it with a small wire brush most of it comes off and some will rubs off on my finger. It honestly looks like it has sat at the bottom of a lake. I'm thinking I could take it to a machine shop and have it dipped but I'm not sure. What do y'all think?
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[hooker]

Take it down to a car wash and clean it with high pressure soap and water. Blow it dry if you can and oil ALL the steel studs etc when you get done cleaning it. Now you can start the inspections to see if the case is any good to use.
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2007 NHRA Division 6 Finals Champion air cooled Rabbit P/U rear engine compact/import class, 13.32 sec 1/4 Woodburn, Oregon
Pauter Big Block VW 2610 cc turbo mid engine roadster 9.69 sec @ 147 mph 1/4 PIR Oregon





I spent most my money on women and VW race cars. The rest I wasted.

[KIM-P.]

Thanks I'll go take care that right now
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[KIM-P.]

What should I set my deck height at?
1-0.051
2-0.048
3-0.058
4-0.050
This is what I have now.
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[mightymouse]

Best bet with varying decks like that, is to buy another deck check tool. Bolt it onto the adjacent cylinder and check to see if both cyls are same height when on the case.
May need to shim one and not the other to get them level.
The heads will thank you.

I usually have the case decked and then make sure all cyls are same length.
Then set deck and they will all be very similar. Of course pistons arent all exactly the same so when they are way off i play musical pistons.

Get em as close as you can. But those are all in range. 40-60 deck is the usual range. I try for no more than 55 thou.
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Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.
Thomas Jefferson


Note to EVERYONE.
Know your ZDDP levels or you WILL lose a cam and lifters.

[KIM-P.]

Ok thanks
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[modok]

Put a little 45 degree chamfer on the case where the cylinders sit, or just make sure they aren't hanging up in the corner.
Check across the tops of the cylinders with straightedge.

If that all seems fine then swap the longest rod into #3 position and run it. Deck is fine

[KIM-P.]

Ok I have determined that I have one cylinder .010 longer then the other three. I do have access to a machine shop at work and was thinking of having the long cylinder cut down .010 to match the rest.
The other thing I was wondering about is with .050 deck height with a set of .040 head gaskets that will put the pistons .090 in the hole. This seems like a lot to me. Are there thinner head gaskets? or other options, or am I worried for no reason?
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[Danwvw]

Can you mock it up and do a compression test? See what you have. It's nice to get the pressure the same on all the cylinders, I don't know probably be something to keep you from getting good readings on a new engine. Just an Idea. But yeah, the problem is likely at the case level. Not sure what they do when they re-Machine the case decks? That's probably what it needs.
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths!

[mightymouse]

dont run gaskets. problem solved. Vw never did.
head to barrel and thats it. .050 OK. .090 = FAIL
_________________
Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.
Thomas Jefferson


Note to EVERYONE.
Know your ZDDP levels or you WILL lose a cam and lifters.

[KIM-P.]

Thanks for the reply's. back in the day I would just bolt the engines together and they all ran pretty well. I guess the saying " its better to be lucky then good" worked for me then.
Thanks again
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[KIM-P.]

I found a set of Weber 34 ICT's and was wondering if they would be worth the $200 asking price for my engine. Sadly I'm very cheap and usually spend more on cheap parts then I would have on quality parts that cost more up front.
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