-72 1641cc turbo build log

[villemil]

So now it drives! AFR around 12 at all times, kinda rich but I will take her to dyno next week for final adjustments.
Max boost I have tested now is 7psi. Now I realized that I run out of gears I got stock 1300 transmission, not even nearly enough for this one.
Thank you guys for all your help, without your help this would not have been possible
On butt dyno my goal of 150hp is very possible!
Will keep updating on dyno results etc...

[madmike]

run out of gears ,, like u need more? It isn't a 'close ratio' trans is it? my bug is a late model with a 3:88 final drive stock welded fine tooth 3rd & 4th gears ,works really good for the abuse I give it now my Bus is a different story I'm always looking to shift into 5th gear because of the 4:86 R&P

[buguy]

His is probably stock 4.36 r&p.

[villemil]

Well my top speed with previous engine at 5000rpm was 145kmh on 4th gear So pretty close ratio gears. Need to save money for a better gearbox.

[madmike]

good for city not fun on highway/autobahn

[madmike]

good for city not fun on highway/autobahn

[panel]

Don't forget for tuning.........you can mix idles and mix mains etc. What I mean is......On the idle circuit you can have a 45 on one bank/barrel and on the other side a 50.

Same with the mains. You can have a 110 and a 130 etc. This is ok to do cause it merges into one with your style intake to turbo. HTH.

[villemil]

Thank you panel! Maybe I don't have to order more jets after all

[villemil]

Now running 10psi of boost, timing set at 28° @ 3500rpm retarding to 21° under full boost. Still running pretty rich but otherwise everything seems great!
Have driven around 500km now. She pulls really well for what it is

[Coyotemutt]

Did you add in water-meth injection to get up to 21 degrees advance? Seems like alot of advance without a charge cooler of some kind.

[Clonebug]

Draw through

[villemil]

Yes it is draw through. After driving I can still hold my hand on the intake even just few inches away from cylinder heads. Intake temp is really cool. No audible detonation at 21°

[panel]

Looks great. Is there a carb support ? And is the carb at a certain angle ? I remember reading on the Turbomania book that I thought it was supposed to be angled a little. Yours does look to be.

EDIT: I think I see the support now

[villemil]

Yep, there is support and it is angled

[buguy]

Yeah in a draw through it will sometimes even ice up. At least here where its mega humid it would.