Re: Why aren't there more forced induction cars?
[Re: BobR]
#2887530
02/13/21 08:49 AM
02/13/21 08:49 AM
|
Joined: Mar 2003
Posts: 1,629 pa
572charger
top fuel
|
top fuel
Joined: Mar 2003
Posts: 1,629
pa
|
/5000 hp what kind of car is it in ?? our door slammer [ promod] has a screw blown hemi thats around 3500 hp we take 1000 hp out to get it to move off the starting line 5.66 at 259 mph 1/4 3.67 at 208 in the 1/8
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
|
|
|
Re: Why aren't there more forced induction cars?
[Re: 572charger]
#2887532
02/13/21 09:10 AM
02/13/21 09:10 AM
|
Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
|
/5000 hp what kind of car is it in ?? our door slammer [ promod] has a screw blown hemi thats around 3500 hp we take 1000 hp out to get it to move off the starting line 5.66 at 259 mph 1/4 3.67 at 208 in the 1/8 That car sounds familiar. Lol.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: Why aren't there more forced induction cars?
[Re: 67_Satellite]
#2887534
02/13/21 09:15 AM
02/13/21 09:15 AM
|
Joined: Jan 2003
Posts: 6,392 nielsville, minn.
quickd100
master
|
master
Joined: Jan 2003
Posts: 6,392
nielsville, minn.
|
Still loving mine after 10 years. Started with blow through, premium pump gas, and a 180K mile,8:0-1 compression, 383 with up to 15 lbs. Learned a lot with the "expendable" engine.#1 takeaway is to bullet proof your boost control devices. A melted W.G.. reference line, or a stuck wastegate will likely cost you at least a head gasket (or 2).Cheap blue Fel-pro gaskets make a great "Fuse".#2, don't get greedy with the timing. Stock junk will live -IF- you don't rattle it. I'm running 20 degrees total timing. I currently have the Sniper X-flow running pump E-85 on a 10:0-1 470 with two of the "Hong Kong Hurricane" 69 m,m, ebay turbos. Got a home made girdle, B.B.C. Eagle rods ,K.B. Icon pistons ,and haven't hurt the bottom end yet. Had it up to 17 lbs. with E-85 and the blow through carb. Got to the point where it couldn't get enough fuel through the "gas" downleg boosters ,so I decided to go to E.F.I. At just 12 lbs. it's uncontrollable below 60 m.p.h. Has 315-60 M/T drag radials, Cal track bars, Cal track shocks, 90/10 front shocks, and the traction gods don't care, but it is a blast to drive .I should add some safety equipment so i can take it to the track. I believe the old 383 would live forever with a 5500 r.p.m. shift point and 15 lbs. Don't be afraid to lean on the stock parts. Pretty much the same for me with a 318 and I stayed with a carb. It's mind blowing what stock parts will absorb as long as you don't let it detonate. I've found that the upper limit of boost with 87 octane and a Snow alcohol injection system is just a bit shy of 18 psi of boost. I got tired of the no torque bottom end of the 318 so it's out with the old and in with the new. I'm going to start fabbing up the hot side for the 446 on Sunday. I'm going to try and hold it under 600 hp, it's going in my used up 81' W-150.
|
|
|
Re: Why aren't there more forced induction cars?
[Re: feets]
#2887673
02/13/21 03:44 PM
02/13/21 03:44 PM
|
Joined: Oct 2007
Posts: 4,209 New York
polyspheric
master
|
master
Joined: Oct 2007
Posts: 4,209
New York
|
The big advantage to boost... since power can be produced at far lower RPM* than NA, you don't need $4,000 rocker arms, fabricated intake manifolds, stepped-tuned headers,1,000 lb. use-it-50-times-and-throw-it-away valve springs, $$$ connecting rods, and billet cranks. How to tell which common engines work well with boost (produce X power from Y inches @ Z boost)? Everything produces more power with boost, but is there a reliable predictor for "if it does this at ATM it will do that @ 40 psi"? No. Port flow CFM and valve area per cubic inch, rod ratio are all factors but none are linear. What to do? Use what everyone else uses (LS, BBC, Gen-2 hemi), or you're stepping way out on thin ice. Some untested engines may surprise you (how about the 289 Studebaker?), but others will produce hundreds of HP less than those mentioned at the same boost level.
* 8,000 RPM is not 33% more inertial load than 6,000 (8K ÷ 6K = 1.333), but 78% (8K^2 ÷ 6K^2 = 1.778).
Boffin Emeritus
|
|
|
Re: Why aren't there more forced induction cars?
[Re: polyspheric]
#2887787
02/13/21 08:16 PM
02/13/21 08:16 PM
|
Joined: Jan 2003
Posts: 6,392 nielsville, minn.
quickd100
master
|
master
Joined: Jan 2003
Posts: 6,392
nielsville, minn.
|
The big advantage to boost... since power can be produced at far lower RPM* than NA, you don't need $4,000 rocker arms, fabricated intake manifolds, stepped-tuned headers,1,000 lb. use-it-50-times-and-throw-it-away valve springs, $$$ connecting rods, and billet cranks. How to tell which common engines work well with boost (produce X power from Y inches @ Z boost)? Everything produces more power with boost, but is there a reliable predictor for "if it does this at ATM it will do that @ 40 psi"? No. Port flow CFM and valve area per cubic inch, rod ratio are all factors but none are linear. What to do? Use what everyone else uses (LS, BBC, Gen-2 hemi), or you're stepping way out on thin ice. Some untested engines may surprise you (how about the 289 Studebaker?), but others will produce hundreds of HP less than those mentioned at the same boost level.
* 8,000 RPM is not 33% more inertial load than 6,000 (8K ÷ 6K = 1.333), but 78% (8K^2 ÷ 6K^2 = 1.778). Yep! It's nice to be able to drive something now and then that idles smoothly with normal street manners. Turbo motors are like Jekel and Hyde, once the turbo spools up it goes from Harvey Milk toast to hang on for dear life!
|
|
|
Re: Why aren't there more forced induction cars?
[Re: polyspheric]
#2887943
02/14/21 02:18 AM
02/14/21 02:18 AM
|
Joined: Jan 2003
Posts: 28,068 Irving, TX
feets
OP
Senior Management
|
OP
Senior Management
Joined: Jan 2003
Posts: 28,068
Irving, TX
|
The big advantage to boost... since power can be produced at far lower RPM* than NA, you don't need $4,000 rocker arms, fabricated intake manifolds, stepped-tuned headers,1,000 lb. use-it-50-times-and-throw-it-away valve springs, $$$ connecting rods, and billet cranks. How to tell which common engines work well with boost (produce X power from Y inches @ Z boost)? Everything produces more power with boost, but is there a reliable predictor for "if it does this at ATM it will do that @ 40 psi"? No. Port flow CFM and valve area per cubic inch, rod ratio are all factors but none are linear. What to do? Use what everyone else uses (LS, BBC, Gen-2 hemi), or you're stepping way out on thin ice. Some untested engines may surprise you (how about the 289 Studebaker?), but others will produce hundreds of HP less than those mentioned at the same boost level.
* 8,000 RPM is not 33% more inertial load than 6,000 (8K ÷ 6K = 1.333), but 78% (8K^2 ÷ 6K^2 = 1.778). I beat the crap out of my TT440 trying to learn how to tune it. I broke some rings and ate a couple head gaskets along the way but never hurt the stock block, crank, or rods. It saw 6,000 RPM regularly but that was about it. It survived a boost spike to 22 psi when I lost a wastegate line.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
|
|
|
Re: Why aren't there more forced induction cars?
[Re: Dragula]
#2889039
02/16/21 08:13 AM
02/16/21 08:13 AM
|
Joined: Mar 2003
Posts: 1,629 pa
572charger
top fuel
|
top fuel
Joined: Mar 2003
Posts: 1,629
pa
|
yeah thats at a mopar show my friends put on every year we get 200 mopars there somtimes !!!!
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
|
|
|
Re: Why aren't there more forced induction cars?
[Re: racerx]
#2894601
03/01/21 10:24 PM
03/01/21 10:24 PM
|
Joined: Jan 2003
Posts: 4,243 Canada
Kam*Kuda
master
|
master
Joined: Jan 2003
Posts: 4,243
Canada
|
Here is the complete setup 500 inch Fast XFI F1X Procharger COG
Kind of off topic a little but a couple of ?......what mph are you pushing ? Is that 500"in a stock block? And how is that hood holding up? Sorry I missed your question Well the hood didn't do very well. The hood pins were crushed and the hood got a crack in the center I cut some holes in the back. I will get another hood soon. I think it was 145 in the quarter
1970 Barracuda Convertible 1968 Satellite Street Strip car 1654.5 Mustang 1955 Land Rover
|
|
|
|
|