New to site, question on 73 bug im building

[5.0 HO]

hey, im new on this forum, figuerd i'd join to give/gain info on air cooled vw's., i bought my first car "73 super beetle" a few years ago, started doing body work on it, rewired from the voltage regulator back, then bought my 90mustang. now im done with the stang, and its back to the bug. i raped 2 other super beeltes to get this one done, i have everything i need to put it back together, just a few questions on some things im not sure on. main things are, the fan housing, i have a scat doghouse style one with no heater ducts, and was recently handed another (which i thought was a transaxle cooling tin" but is really another typle of fan shroud. this one, i take it leaves the fan open. as for the motor im building, its a 1600 dual port stroker, the top end needs to be rebuilt, i figuer i'd do a valve job on it, buy new pistons and cylinders, i belive the cylender bore to be 90.5 or 92mm, im not sure to be exact. all the same i know cooling is key to the air cooled motors, so would a inclosed fan housing be more up my alley, or the open fan?
now as for the heat exchanger's. i dont plan on using them at all, i'll find other means of heat "im building a rat rod bug" should i make covers for where the exhaust would enter them to flow into the car? just leave them open, or make someting to have them meet with the rest of the exhaust?

last question, what is a ideal compression ratio on a 1600cc stroker? , should i mill my heads at all (they have never been cut)?

any ideas/ information on my questions would be greatly appreicated, the is a learning experince for me (im only 19) and i want to make sure i do this right, thanks, justin

[BugMann]

Originally Posted by 5.0 HO

hey, im new on this forum, figuerd i'd join to give/gain info on air cooled vw's., i bought my first car "73 super beetle" a few years ago, started doing body work on it, rewired from the voltage regulator back, then bought my 90mustang. now im done with the stang, and its back to the bug. i raped 2 other super beeltes to get this one done, i have everything i need to put it back together, just a few questions on some things im not sure on. main things are, the fan housing, i have a scat doghouse style one with no heater ducts, and was recently handed another (which i thought was a transaxle cooling tin" but is really another typle of fan shroud. this one, i take it leaves the fan open. as for the motor im building, its a 1600 dual port stroker, the top end needs to be rebuilt, i figuer i'd do a valve job on it, buy new pistons and cylinders, i belive the cylender bore to be 90.5 or 92mm, im not sure to be exact. all the same i know cooling is key to the air cooled motors, so would a inclosed fan housing be more up my alley, or the open fan?
now as for the heat exchanger's. i dont plan on using them at all, i'll find other means of heat "im building a rat rod bug" should i make covers for where the exhaust would enter them to flow into the car? just leave them open, or make someting to have them meet with the rest of the exhaust?


last question, what is a ideal compression ratio on a 1600cc stroker? , should i mill my heads at all (they have never been cut)?

any ideas/ information on my questions would be greatly appreicated, the is a learning experince for me (im only 19) and i want to make sure i do this right, thanks, justin

IM learning to, I also have a 72 Standard bug.There awesome cars.
First off, you dont got a 1600cc stroker, no such thing.
If your using 87,88,90.5,92,94mm pistons this is just a bore increase.

Stock the 1600cc is 85.5mm pistons x 69mm crank
the pistons above would make the following with the stock 69mm crank.
87x69= 1641cc there slip in pistons, no machining required
88x69= 1679cc there slip in or machine in depending which you get
90.5x69= 1776cc machine in pistons
92x60= 1835cc machine in pistons
94x69= 1914cc machine in pistons.

Now for the cooling tin, stock is the best in cooling function, unless you buy Jake Rabby's DMT kit.
90.5 and 92mm pistons have the same bore when machining for these pistons.
Best out of the 2 is 90.5mm.Also stays cool better and more of a daily but you can pump it up.

For example if you want a nice street motor
1776cc
90.5x69
Engle cam W110 or FK8 if you wanna rev it up
Dual 40IDF Webers
CB Performance CNC Round port heads 42x37mm valves
1.4:1 rockers (use with FK
1.25:1 rockers (use with W110)
Merged header with a mondo muffler
Flamethrower Ignition kit

If you want more hp buy a bigger crank, 74mm (slip in), 76mm, and up

Compression stock you have 7:1 , you can increase it up to 8.5:1.

[BugMann]

Heres a site for you
CB Performance Products, Inc. sells CNC ported cylinder heads, dune buggy parts, dropped spindles, disc brake kits, turbos, electronic fuel injection systems and turnkey engine kits