Alert....Jones camshaft **** alert...

[Krooser]

You'll have to wait until Tonite but my new cam has arrived via Buster Browns package car ( that's UPS lingo)... Won't be home until Tonite.

Film at 11....

 

[yellow rose]

CAM TEASE.

 

[Kendog 170]

Lube it well before insertion.

 

[Krooser]

This is the cam Jim (Wyrmryder) bought for me for my dirt car. A nice sponsorship deal and I appreciate the help.

I was going to visit my machine shop hoping to get an update ony block and heads but I got stuck waiting for 3 1/2 hours to load my trailer so I won't be able to stop. I'll toot the airhorn as I sail by...

The shop owner bought this Corona deal hook line and sinker.Closed his shop to customers. Shortened his hours. Now he's way behind and caught in the middle. Dammit...

 

[Krooser]

Nicely packaged...parkerized. CWC manufactured core (couldn't ID the Howard's I bought a couple weeks ago not that it matters much)

612/585 lift with 1.6 rockers...

 

[rumblefish360]

Lube it well before insertion.

That’s what she said!

 

[Wyrmrider]

don't drop them

 

[nm9stheham]

Anyone know what is meant by 'seat' for the 'seat duration'? .001" at the valve at recommended lash or ????

 

[Wyrmrider]

jones uses lash +.006
thats lash at the lifter not the valve stem
so = same as hft or hr
cam is designed for part throttle around paperclip turns then getting in to it upon exit
1.6 would make for more top end down the straight
maybe next year
with the Ti valves
could make more hp with more duration and lift and rpm in the cam but off the turns is key
Krooser has a rpm limit for maintenance budget and time between races
thanks for asking nm
now let's see how close we came theory vs practice
afik mike is very good at choosing

 

[nm9stheham]

Cool stuff. Sounds like our local circle track, Eastside Speedway, paper-clip type at just over 0.4 miles. Lots of RPM change in both straights. Best advantage always seems to be to hook up and shoot out of turn 2. I never raced weekly.. just running 4 serious rallies per year is a lot of work. Weekly racing, and driving a truck means a lot of late nights I bet!

 

[nm9stheham]

BTW, who is CWC? I found that on an Opel cam in my stash, ground by Norris.

 

[MopaR&D]

jones uses lash +.006
thats lash at the lifter not the valve stem
so = same as hft or hr
cam is designed for part throttle around paperclip turns then getting in to it upon exit
1.6 would make for more top end down the straight
maybe next year
with the Ti valves
could make more hp with more duration and lift and rpm in the cam but off the turns is key
Krooser has a rpm limit for maintenance budget and time between races
thanks for asking nm
now let's see how close we came theory vs practice
afik mike is very good at choosing

That's really cool, I told Jim at Racer Brown I was planning to do road-racing stuff with my Duster so he custom-ground my cam for maximum punch out of the corners. Feels about right, pulls really hard from 2500-5000 and keeps making power to 6000. It's not a race car though obviously my cam is MUCH milder than yours, still sees a lot of street use. The throttle response letting off the gas then getting back on it is impeccable, instant torque.

 

[Wyrmrider]

cwc the cam caster- I forget if they do the journals or not
MopaR&D cool name tm it
exactly not a bracket racer build so you loose some top end hp
when I said more duration & lift & rpm above- that means lower gears in the quickchange to provide the same torque off the corner
would work? sure big time but would take us over the self imposed rpm limit
new lighter pistons but still stock rods
thnks for the comments
recall that we are W2 on alcohol

 

[Krooser]

BTW, who is CWC? I found that on an Opel cam in my stash, ground by Norris.

Big cam core manufacturer in Michigan. One of two. The other is Camshaft Machine Corp (CMC). When you buy a shelf cam from any of the big cam companies it likely was ground by CMC and put in a Comp, Isky, Crane box.
They make 12,000,000 cams per year!

 

[Krooser]

Both the Jones and Howard's Cams are ground on the same CWC T15 cores...

 

[Krooser]

Another pic...the only way to tell the difference!

 

[Krooser]

Here's a comparison photo of a SBM and SBC cam...lobe width on Mopar .612 vs .515 on the Chebby

Cam core...Mopar 1.12 vs .990 on the GM. Stronger core equals less deflection and loss of lift with heavy springs.

More ammo in the Mopar vs Brand X

 

[nm9stheham]

That's really cool, I told Jim at Racer Brown I was planning to do road-racing stuff with my Duster so he custom-ground my cam for maximum punch out of the corners. Feels about right, pulls really hard from 2500-5000 and keeps making power to 6000. It's not a race car though obviously my cam is MUCH milder than yours, still sees a lot of street use. The throttle response letting off the gas then getting back on it is impeccable, instant torque.

Which is essential if you are using throttle as part of the steering control out of corners. Same thinking for my rally car stuff.... peak HP is not even on the list. But a wide torque curve IS. You never know what RPM's you are going to be at going through the 14th or 114th or 214th corner on a stage.... and they are all different.

 

[Krooser]

My 388/387/383/318 junk should hit about 650 horsies. Most of my buddies running the 362 GM spec motors tell me you don't need more than that. Well they are correct if you don't want to win on a big half mile. The winners are wheeling 800-900hp.

My only hope of winning is a big crash in front of me on the last lap.

 

[Wyrmrider]

cheaters