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If 112 degree lobes centers are the hot ticket, who makes them? I've heard people reconmend WEB cams. I also heard that Engle's turbo grinds are designed backwards.

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John Springsteel
VW drag racer
BUG2180@aol

http://www.phnet.fi/public/hefor1/vwinfoca.htm
try this site!

"turbo cam" is marketing BS IMO. Just get a good cam that you would use for aspirated, and it will run great!

Hi
Pauter make some suitable cams http://www.pauter.com/Default.htm
Steve C

Look what I found at that cam info website.

Crower Cams

Cams may be used with stock or ratio rocker arms
(lift at valve with 1.1:1 rocker arms)
#61002
intake 260º 220º 0,375" 9,53 110º
exhaust 268º 227º 0,381" 9,68 110º
Dual lobe; stock replacement; 1000-5000rpm

OK, so this cam looks like an absolute low RPM torque monster that would run out of steam pretty quickly, right? Perfect.

Lets say you use this cam in a pretty large engine, say a 1914. Big bore, short stroke. The cam timing should provide PLENTY of low end torque to satisfy any and all accelleration desires, not to mention smooth driving. It would run out of breath a little earlier probably, say around 4500 RPM instead of 5k.

Add a really really big turbo larger. This turbo will be large enough that it won't spool until engine RPMs reach 3500, and no significant boost is available until 4000, lets say a single pound.

A single pound of boost is killer at that point, since you would otherwise be running at a vaccum. But, as you continue to rev the turbo force feeds air into the engine, extending it's RPM range past the normally aspirated mark of 4500.

It might not ever make more than 8 or 9 pounds boost, but it can do it up to the RPM where the engine is no longer stable, depending on balance this can be up to 8000 RPM. So you've taken a torque monster 4500 RPM engine and extended it's life up to 8000 RPM. Not to mention with this low of boost levels air intake temps have not increased as much as they would have with monster boost at low compression from the get go.

The turbo is hardly working, and has planty of reserve. A boost control might not even be needed, since it's not approaching it's flow limit. Better to err on the side of safety though.

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*** Teach a Man to Fish ***
Searoy

[This message has been edited by Searoy (edited 09-07-2001).]

I ordered a FK65 (.478"X280). This choice, to take advantage of new 1.4 rockers that I already have. Its going in, if any one has more input, post away.THANX

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John Springsteel
VW drag racer
BUG2180@aol

Try Dave Kawell. He has over 40 grinds of cams. A lot of which are for turbo motors. He is located in TN. Good luck.

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by JohnConnolly:
"turbo cam" is marketing BS IMO. Just get a good cam that you would use for aspirated, and it will run great!<HR></BLOCKQUOTE>

And get a proper turbo cam and it will run even better. Stock cams are fine if you aren't on the boost very often or have an exhaust system that doesn't develop a lot of backpressure above and beyond the boost you're creating. The physics that cause a wild camshaft to idle poorly is identical to what goes on when an engine under boost doesn't use a proper turbo cam.

We agree to disagree. I feel turbo cams are overrated, and you have WAY more selection in std grinds. If you are anal about it (I'm running a aspirated grind in all my forced induction engines), get an aspirated grind and get it on 112 LC. Easy enough to do, a whopping 2 days more wait.


<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Sharkey:
And get a proper turbo cam and it will run even better. Stock cams are fine if you aren't on the boost very often or have an exhaust system that doesn't develop a lot of backpressure above and beyond the boost you're creating. The physics that cause a wild camshaft to idle poorly is identical to what goes on when an engine under boost doesn't use a proper turbo cam.<HR></BLOCKQUOTE>

I run an Engle K-8.
It worked good on my 2212 350hp motor and works good in my 2386 450hp motor now.

Motor idles nice and pulls hard to 7500 rpm. 8000 is pretty flat. TONS of torque.

My motor is in Loyd Moshers dragster now and he says it pulls harder than Cory McClenathans' Autocraft motor with two stages of nitrous did.

I tried to call Loyd, once. I got the number out off an older magazine. It ended up being someones cell number.
Do those big HP motors have EFI, NOS or intercoolers?
The FK-65 came UPS today, so thats what I'm using. With 1.4 rockers.

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John Springsteel
VW drag racer
BUG2180@aol

Loyds number is (909)981-1809.
My motor (that is in his dragster) uses a Holly 780cfm vacum secondary carb. I have a carb sponsor that gave me the carb and has done alot of tricks to it. It flows 830cfm now and runs as smooth as can be on or off boost. A buddy of mine runs a SDS computer with a Super Beetle fuel injection setup on his 2165 witha small turbo. He drives this thing over 100 miles per day (to and from work)and ran 11.60's at Sacramento with 20# of boost. He has more money in his motor than I do but he has all Berg stuff and he built his to last. I built my motor to do one thing - haul ass.

Okay, I need a cam for my 2.0L type 4 that will be turbocharged. It is a standard 71 x 94 and static compression will be set around 8:1. This is a CIS injected blow through design. I will be running 12-14 psi boost.

This engine is a 914 that is used for track and some street.

I have heard from Dave Kawell and John at Aircooled, to just use the normally aspirated cam I want and it will run fine. Dave said that the 112 LC's will cause the exhaust valves to run hot.

I am considering a Web #86. I have used the #73 before and like it also, so it may be considered also.

Any advice or suggestions? I am getting ready to assemble the engine and need to get a cam soon.

Ed