engine setup for 18psi
Drifting
Joined: Dec 2004
Posts: 1,937
Likes: 1
From: Tempe Az
Originally Posted by motomafia
Need to know a good engine head combo for running around 18psi... dont want to worry about it breaking?....... what internals to run and injector size?? thanks guys!
For 18psi?
8:1 compression
LQ9 iron block
Any forged rod/piston combo
Any 225cc head out there - I like the DART's.
Safety Car
Joined: Apr 2004
Posts: 3,932
Likes: 8
From: Hayward California
I'll tell you what I run..
408 iron.. I wouldn't run an aluminum unless it was setup by W2W or an outfit whose run em and not just once. Most of the builders I spoke w/ don't have a problem w/ Eagle cranks. Hell.. even a stock crank can support more than we can currently throw at it. Something that was explained to me an I thought confirmed what I wanted to do...
Nitrous puts the most stress on a motor.. 2nd is a supercharger and then comes turbo's. I run an Eagle.
The rods are Callies H-Beam and ARP all over.
Heads are a ported and flow better than a set of LQ9's... more important though is that they are a good match for my mild cam.
Arnel
408 iron.. I wouldn't run an aluminum unless it was setup by W2W or an outfit whose run em and not just once. Most of the builders I spoke w/ don't have a problem w/ Eagle cranks. Hell.. even a stock crank can support more than we can currently throw at it. Something that was explained to me an I thought confirmed what I wanted to do...
Nitrous puts the most stress on a motor.. 2nd is a supercharger and then comes turbo's. I run an Eagle.
The rods are Callies H-Beam and ARP all over.
Heads are a ported and flow better than a set of LQ9's... more important though is that they are a good match for my mild cam.
Arnel
Thread Starter
Instructor
Joined: Jan 2006
Posts: 121
Likes: 0
Yea I mean I dont need a ton of CI .... and need to stay aluminum... so maby stick with 347 or go to 383.... I dunno.... how much for a set of the dart heads ... and should I get them ported or are they good to go out of the box?
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Safety Car
Joined: Sep 2002
Posts: 3,948
Likes: 0
From: Aurora IL
St. Jude Donor '06
These guy's are telling you right. To set up a block to handle 18+lbs you are going to get into some money. My LS2 408 it set up for 20+lbs
It is a darton sleeved block, mains and all the goodies (big bucks) the problem is we can't get it to stick with 16lbs of boost (on the dyno) so what the heck is the point
I think we will end up with 800rwhp on pump gas when I get better tires but it is more than a joke(spinning) now. Anyway it can be done but it is not cheap 
Looks like I am going to go for a little ride tomorrow
It is a darton sleeved block, mains and all the goodies (big bucks) the problem is we can't get it to stick with 16lbs of boost (on the dyno) so what the heck is the point
I think we will end up with 800rwhp on pump gas when I get better tires but it is more than a joke(spinning) now. Anyway it can be done but it is not cheap Looks like I am going to go for a little ride tomorrow
Drifting
Joined: Apr 2002
Posts: 1,941
Likes: 0
From: Stealth So Cal GOCC ...comming to invade your neighborhood soon
Originally Posted by Z06GMAN
These guy's are telling you right. To set up a block to handle 18+lbs you are going to get into some money. .......
the problem is we can't get it to stick with 16lbs of boost (on the dyno) so what the heck is the point I think we will end up with 800rwhp on pump gas when I get better tires but it is more than a joke(spinning) now. Anyway it can be done but it is not cheap
.....
the problem is we can't get it to stick with 16lbs of boost (on the dyno) so what the heck is the point
I think we will end up with 800rwhp on pump gas when I get better tires but it is more than a joke(spinning) now. Anyway it can be done but it is not cheap .....
I had mine (346) at 16#'s but turned it down because it's a constant challenge just to put down a full 12#'s on the street unless it's just for bragging rights on the Dyno or a dedicated track car with wrinkle walls. Another question, are you really ready for the $$$ you'll have to sink into the drivetrain? Just ask roadrebel about his driveline adventures at far less psi. 
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
well not sure if any of the above responces have personal pushed 18psi. i can tell you from my personal experience, i've run 18 psi.
i dont have anything fancy, minus my head studs. ls1 block stock crank manley h beam rods, lunati pistons(off the shelf) 228 224 588 580 115, afr 205 out of the box, arp main studs, arp L19 head studs and thats about it. i also run SD which is not the norm either but i personal love. it must be working well as i have yet to hear any c5 with 17 dr go as fast as i did. 145 mph @ 9.9 isnt to shabby for self tuned.
i dont have anything fancy, minus my head studs. ls1 block stock crank manley h beam rods, lunati pistons(off the shelf) 228 224 588 580 115, afr 205 out of the box, arp main studs, arp L19 head studs and thats about it. i also run SD which is not the norm either but i personal love. it must be working well as i have yet to hear any c5 with 17 dr go as fast as i did. 145 mph @ 9.9 isnt to shabby for self tuned.
Last edited by NICK YOSKIN; Feb 28, 2006 at 10:53 PM.
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
Originally Posted by NICK YOSKIN
well not sure if any of the above responces have personal pushed 18psi. i can tell you from my personal experience, i've run 18 psi.
i dont have anything fancy, minus my head studs. ls1 block stock crank manley h beam rods, lunati pistons(off the shelf) 228 224 588 580 115, afr 205 out of the box, arp main studs, arp L19 head studs and thats about it. i also run SD which is not the norm either but i personal love. it must be working well as i have yet to hear any c5 with 17 dr go as fast as i did. 145 mph @ 9.9 isnt to shabby for self tuned.
i dont have anything fancy, minus my head studs. ls1 block stock crank manley h beam rods, lunati pistons(off the shelf) 228 224 588 580 115, afr 205 out of the box, arp main studs, arp L19 head studs and thats about it. i also run SD which is not the norm either but i personal love. it must be working well as i have yet to hear any c5 with 17 dr go as fast as i did. 145 mph @ 9.9 isnt to shabby for self tuned.
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by AMERICAN_HP
Yeah but you have to admit. Running it once compared to running it consistantly are 2 different animals. I'm sure there are more than a few cars on this forum that could run 18psi once or twice without it letting go. But just how many times you can run it no one knows.
running 18psi at the track is totally different then running on the street.
i have run 16 psi regularly on the street
not sure i have to admit to anything.... how do you know i ran it once?sorry, but like 8 runs.
well more important then psi is track #'s. any of those cars on the forum run 145mph @ 9.9 w/60 ft 1.789 on 17 dr?
Last edited by NICK YOSKIN; Mar 1, 2006 at 07:55 AM.
Drifting
Joined: Jan 2005
Posts: 1,642
Likes: 0
Originally Posted by NICK YOSKIN
running 18psi at the track is totally different then running on the street.
i have run 16 psi regularly on the street
not sure i have to admit to anything.... how do know i ran it once?sorry, but like 8 runs.
well more important then psi is track #'s. any of those cars on the forum run 145mph @ 9.9 w/60 ft 1.789 on 17 dr?
i have run 16 psi regularly on the street
not sure i have to admit to anything.... how do know i ran it once?sorry, but like 8 runs.
well more important then psi is track #'s. any of those cars on the forum run 145mph @ 9.9 w/60 ft 1.789 on 17 dr?
How much did your car dyno at 16psi?
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
Originally Posted by motomafia
i expect to spend some coin, just need to know best direction to go in.. i HAVE to keep a alum block... And would like a setup i dont have to worry about it breaking/....
I would save your money for the new alum "WARHAWK" WORLD PRODUCTS BLOCK coming out in a month or two and WORLD PRODUCT HEADS (very similar to C5R Heads), that can both accomadate both large cubic inches (if you want to go large) and HUGE BOOSTED HP (18lbs should be no problem) mainly becaue the WORLD PRODUCT HEADS won't LIFT and be blown off by the HUGE BOOST, b/c they allow for eight (8) head bolts to keep them firmly in place, where all your other options out there for you only allow for 6 head bolts to keep the heads firmly in place.
The biggest problem you will have with the current options on the market making 18 lbs of boost is keeping the heads from lifting and the superstrong WARHAWK WORLD PRODUCT BLOCK (which was all the rage at SEMA) will cure this problem by allowing eight head bolts to hold down the WORLD BLOCK HEADS. Per my recent GM High Tech magazine, figure around 4,000.00 for a fully prepped bare WARHAWK Block (much better than the $6,400.00 for a C5R block)!!
Last edited by Mopar Jimmy; Mar 1, 2006 at 01:05 AM.
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by BLOWN ECS Z06
I would save your money for the new alum "WARHAWK" WORLD BLOCK coming out in a month or two and WORLD BLOCK HEADS (very similar to C5R Heads), that can both accomadate both large cubic inches (if you want to go large) and HUGE BOOSTED HP (18lbs should be no problem) mainly becaue the WORLD BLOCK HEADS won't LIFT and be blown off by the HUGE BOOST, b/c they allow for eight (8) head bolts to keep them firmly in place, where all your other options out there for you only allow for 6 head bolts to keep the heads firmly in place.
The biggest problem you will have with the current options on the market making 18 lbs of boost is keeping the heads from lifting and the superstrong WARHAWK WORLD BLOCK (which was all the rage at SEMA) will cure this problem by allowing eight head bolts to hold down the WORLD BLOCK HEADS. Per my recent GM High Tech magazine, figure around 4,000.00 for a fully prepped bare WARHAWK Block (much better than the $6,400.00 for a C5R block)!!
The biggest problem you will have with the current options on the market making 18 lbs of boost is keeping the heads from lifting and the superstrong WARHAWK WORLD BLOCK (which was all the rage at SEMA) will cure this problem by allowing eight head bolts to hold down the WORLD BLOCK HEADS. Per my recent GM High Tech magazine, figure around 4,000.00 for a fully prepped bare WARHAWK Block (much better than the $6,400.00 for a C5R block)!!
dont hold your breath.....i am betting mid summer....
no reason unless your car is back halfed
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
Originally Posted by NICK YOSKIN
running 18psi at the track is totally different then running on the street.
i have run 16 psi regularly on the street
not sure i have to admit to anything.... how do know i ran it once?sorry, but like 8 runs.
well more important then psi is track #'s. any of those cars on the forum run 145mph @ 9.9 w/60 ft 1.789 on 17 dr?
i have run 16 psi regularly on the street
not sure i have to admit to anything.... how do know i ran it once?sorry, but like 8 runs.
well more important then psi is track #'s. any of those cars on the forum run 145mph @ 9.9 w/60 ft 1.789 on 17 dr?
Did your car run AWESOME numbers??? Hell Ya!!!! But thats already been said/discussed in the F/I section about 422,312 times..
Even though my motor is being built to withstand MUCH more boost, I will probably NEVER see those times. Hell, I cant even race..
Drifting
Joined: Oct 2000
Posts: 1,957
Likes: 1
From: Albuquerque NM
Originally Posted by motomafia
Need to know a good engine head combo for running around 18psi... dont want to worry about it breaking?....... what internals to run and injector size?? thanks guys!