Super 1600 build-up...
 

Need some help building an inexpensive engine for my manx. The car should weigh in at less than 1400 lbs. The crank needs to be 8 doweled.
Here is what I have that is good.
2 stock engine cases.
2 sets of P/C 85.5mm and 87mm.
1 good stock cylinder head.
1 set of sheetmetal.

I need reccomendations on crankshaft selection, camshaft selection. I would like to be able to use stock heads and a stock 34 pict to keep the engine cheap for now. I was thinking of using a 74 mm crank to bump up the displacement to 1699cc and if my numbers are also correct that would net a CR of 9.2:1, which would burn todays higher alcohol fuels. I didn't have the stock deck height spec or the stock head cc's spec.

What are some good camshaft selections to run with single high rev valve springs.
What I need is a good amount of torque since my rims weight 39 lbs. each without the tire.

Any advice is appreciated.
I am trying to stay around $500 for the major items.
Thank you...

For me best choice is the 69mm counterweight (new) with no more than 8:1 (7.5 is fine) , more than 1.6 you need more $$ , search more power in header/muffler, air filter, and cbperformance 34pic upgrade, (big venturi) and polish your port´s. For a 1699cc you need a single weber 40 IDF with a low engleW100 (torque) then you feel the diference vs. the 1584cc .... For race it you need 40´s and a engleW130

If you like 74mm crank..... go to 2000cc.


CARLOS PALOMINO
FROM PERU

Some photos (yesterday)

http://www.flickr.com/photos/vwperu

I like people who are talking about small engine displacement and the way to optimise it. :D It's a good new since my engine died last weekend. Anyways, it's the best way to be competitive in you categorie, in engine size I guess. Do you know how much hp I would get from double barrel dellorto 36's and a merge 1 5/8 header on a 1600cc DP? How could I have my engine rev up to 5500-6000 RPM?

The reason I want the 74mm crankshaft is that it requires no case modification and going to 2000cc would require boring the case for bigger P/C which takes money I don't have. I also don't want to go too big of a stroke and throw off my bore Vs. store ratio.