Kitty Killer
Drifting
Joined: Apr 2010
Posts: 1,262
Likes: 122
From: Vetteville Tennessee
Where Bill? 
You get that head fixed yet?
I took a couple pic's of that lime green one at TX2K. The instrument cluster was retro as well
. I always liked the mopar clusters back in the day.
You get that head fixed yet?
I took a couple pic's of that lime green one at TX2K. The instrument cluster was retro as well
. I always liked the mopar clusters back in the day.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
I know this is not a really strong comparison, but my wife's GMC Canyon runs on unleaded regular petrol and has a mechinical comp ratio of over 10:1. DOHC, direct injection, along with variable valve timing gives tuners lots to play with.
Thread Starter
Instructor
Joined: Jul 2013
Posts: 103
Likes: 15
There may be a lot more left there. If the blower is bigger, it's certainly capable of pumping more air. If it has variable valve timing and good spark control, the limit on 93 octane goes up appreciably.
I know this is not a really strong comparison, but my wife's GMC Canyon runs on unleaded regular petrol and has a mechinical comp ratio of over 10:1. DOHC, direct injection, along with variable valve timing gives tuners lots to play with.
I know this is not a really strong comparison, but my wife's GMC Canyon runs on unleaded regular petrol and has a mechinical comp ratio of over 10:1. DOHC, direct injection, along with variable valve timing gives tuners lots to play with.
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
That vid was from TX2K. Got the head fixed but unfortunately I cracked a sleeve on that run.
Racer
Joined: Oct 2012
Posts: 278
Likes: 11
From: Sum Where Mid-Low 9'S
Quote:
Originally Posted by THE BLADE View Post
From what I understand the Kitty makes 12 lbs of boost, so not much left on the table there, if the plan is to use pump gas. The only advantage that Hemi has is the two spark plugs per cylinder and a beefy bottom end.
[QUOTE=old motorhead;1589372381]There may be a lot more left there. If the blower is bigger, it's certainly capable of pumping more air. If it has variable valve timing and good spark control, the limit on 93 octane goes up appreciably.
12 lbs is not a lot of boost these day with Meth injection... I think the intercooler is going to be the hold up on making bigger power...
Originally Posted by THE BLADE View Post
From what I understand the Kitty makes 12 lbs of boost, so not much left on the table there, if the plan is to use pump gas. The only advantage that Hemi has is the two spark plugs per cylinder and a beefy bottom end.
[QUOTE=old motorhead;1589372381]There may be a lot more left there. If the blower is bigger, it's certainly capable of pumping more air. If it has variable valve timing and good spark control, the limit on 93 octane goes up appreciably.
12 lbs is not a lot of boost these day with Meth injection... I think the intercooler is going to be the hold up on making bigger power...
Thread Starter
Instructor
Joined: Jul 2013
Posts: 103
Likes: 15
I can tell you that the upper is very small, and I would be amazed if they can go smaller there. A couple of Kittys always show up at Lingenfelters cars and coffee on Saturdays.
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Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Sneak over and put a tape measure on one. To really know, I guess you'd have to measure the crank pulley too. It'd be hard to be inconspicuous measuring the crank pulley though Seems I heard that there is some type of ratcheting mechanism on the driven end. When you get off the gas, the blower coasts to a stop. I read it on the internet....it has to be true...
Seems I heard that there is some type of ratcheting mechanism on the driven end. When you get off the gas, the blower coasts to a stop. I read it on the internet....it has to be true...
Melting Slicks
Joined: Mar 2007
Posts: 2,391
Likes: 23
From: Santa Barbara CA
ZR1 guys have been pushing some pretty serious boost on pump gas. There are a lot of variables to consider, obviously, but I'm thinking the Hellcat should be in the same ballpark as far as it's potential.
It also has variable cam timing, so that's another possible advantage if it's designed for performance.
What I've read claims the blower is spun at 2.36 times crankshaft rpm. 14,600 rpm is also the claimed max speed @ 6200 rpm fuel cutoff. Numbers seem to add up it seems. Being that it's a twin-screw, the other rotor spins faster. So maybe it'll it be rpm limited. That I don't know.