turbocharging, anyone?

Found a very good forum for members who might, down the road, want to turbo their motors. Its www.Shoptalkforums.com...then click on The Forced Induction Forum. I know this forum has been mentioned before but I thought I'd bring it up again because the latest responses have been very interesting. Click on 'Pull through turbos old technology'. Comments by Joe at Moorepartsource are both educational and entertaining...especially about working on his Corvair in the 60/70's. His comments on fuel injection are also worth the read.
Santa brought me a Gene Berg Power Achiever pully. VERY expensive but what a beautiful, quality piece! Now, if Santa would only bring me that BAS exhaust system I wanted.
Happy Holidays
Ron

Ron, I have a stock diameter "Achiever" on my 2,110 and agree that Berg pulleys are very nicely made. However I will be removing it soon and replacing it with a lightened, forged steel stock type pulley from Pauter Machine. My reason is that several knowledgable and experienced people on the CLF have had Berg pulleys "weld" themselves to the crankshaft snout on performance engines.

If you decide to install it, make sure it has a slight interference fit on the crank nose and use blue LokTite per the instructions.

My new 2,387 will be built with a REAL harmonic balancer (Fluidampr brand).

Hi George, hope you're enjoying the holidays. Interestingly, I thought of a Pauter pulley while I was looking at the Berg pulley. I wanted a smaller diameter pulley to slow down the fan a bit(911 shroud). My builder, who drag races a Beetle, has a sweet-looking little Pauter pulley on his drag motor. I may even end up running a really small Pauter pulley in the Spring and Fall and the Berg Power pulley in the summer. Spring and Fall around here can be quite chilly. I'll have to see how I like the Berg pulley.

Hey George, what's the deal with big or little pulleys.I understand the imporatnce of the balance, etc, but are we talking about spinning the fan for engine cooling puropses?
MM

Paul, usually a type 1 engine with stock shroud/fan (hopefully the late style dog-house units) has several basic fan speed options. Stock pulleys are the norm; a "power pulley" is a smaller diameter crankshaft pulley to slow the fan down and make maybe 5 bhp from less fan parasitic loss, but with the possibility of overheating in more temperate climates.

A stock diameter crankshaft pulley can be used with the smaller Porsche 356/912 alternator pulley halves and hub to speed up the fan by about 11.5 percent for better cooling (if necessary) on a performance built engine (I run this on my 170 BHP 2,110 with no extra oil cooler for warm weather running but switch back to stock VW fan pulley for colder weather). NOTE that a welded and balanced fan is mandatory if you want to speed it up.

You could also try a "power" crank pulley and the Porsche 356/912 alternator pulley for an "intermediate" fan speed increase, maybe around 5 percent.

He is referring above to the Porsche 911 style cooling shroud and fan option for type 1 engines; these overcool (almost as bad as overheat) so slowing down the Porsche fan is a good idea both for cooling and bhp parasitic loss. You can accomplish the slow-down with different crank and/or alternator pulleys for these installations, and use oil and cylinder head temperatures to determine which combination is right for your engine and climate.

Got it!
I just picked up a different style fan shroud and was wondering what I might expect with my existing fan/pulley set-up and then where to go from there.
Thanks
MM

One problem with the Bernie Bergman 911 shroud is that you can not change the alternator pully. It's mated on the the fan. It's not interchangeable with other pulleys.
Life's a learning curve. If I had it to do over again, I would not buy a 911 type shroud, especially now that I have to cut/trim it to fit my new, wider motor. It does look nice, though.
Ron

Looks kill.

Hey Jake, what do you think of ACE's oil thermal kit-the one that screws into the oil filter and reroutes 'cool' oil back to the engine, rather than to the oil cooler? I'm thinking of installing one. I do drive the car from April on, and it can get chilly up here (B.C.). Would this be a smart investment for my over-cooling Bergman shroud? I have gone to a smaller pulley, to slow down the fan.
P.S. Just spend an hour going through your web site for the first time. Very impressive.
Ron

Ron,
what is this ACE oil thermal kit?

Victor, the thermostat that ACE sells is made by Mocal in England. It lets the oil circulate through the oil filter and back to the engine until it reaches about 180 degrees , then slowly opens up to the cooler. I hav'nt intsalled mine yet , will post the results.

The MOCAL unit from Art Thraen is a nice piece - bear in mind that even when "closed" (cold/cool oil) a very, very small amount of oil is flowing through the MOCAL to an auxilliary cooler to keep it primed. The thermostat begins to open at about 160 F and is fully open at about 180 F.

The MOCAL mounts on your spin-on oil filter adapter, then the spin-on oil filter attaches to the MOCAL.