forged internals & N/A???

jjtgiants · 02-21-2007, 04:42 PM

Noob question.....

Forged internals make a stronger engine are, but are there any advantages to having forged internals and staying N/A?

I'm assuming that if I forged my internals the compression would more than likely drop from 10:1:1 to about 8:5:1 (just a guess) and I would lose power, but is there a way to forge the internals and safely up the compression past the 10:1:1 ratio and gain power?

*03gtmustang* · 02-21-2007, 05:19 PM

Yes, but then you run too much and youll need race gas.

3V2000GT · 02-21-2007, 05:21 PM

if you forge your internals you wont lower compression. Compression depends on what pistons you have, lower the compression= less power better for turbo supercharged cars, higher compression= more power NA. I have forged internals and Im NA, I have the highest compression without having to use race gas

forged internals = good less to worry about, your crank is already forged

silverstang04 · 02-21-2007, 05:21 PM

Not a pro at this but I think you would want to go with high compression pistons. Not really sure, the pros will be here in a minute.

jjtgiants · 02-21-2007, 05:24 PM

Quote:

Originally Posted by 3V2000GT

if you forge your internals you wont lower compression. Compression depends on what pistons you have, lower the compression= less power better for turbo supercharged cars, higher compression= more power NA. I have forged internals and Im NA, I have the highest compression without having to use race gas

forged internals = good less to worry about, your crank is already forged

Oh ok, that makes sense. What compression are you able to run on your car without race gas?

bassman97 · 02-21-2007, 07:04 PM

Usually the OEMs won't put more than 11:1 in their cars to run on pump gas so that is probably a good limit to abide by.

3V2000GT · 02-21-2007, 09:29 PM

Quote:

Originally Posted by jjtgiants

Oh ok, that makes sense. What compression are you able to run on your car without race gas?

im 100% sure but 12:1 but i do know its real high

bassman97 · 02-22-2007, 06:53 AM

This question though is tough to answer since it also depends on the cam. If you have a profile w/ more overlap, then you can get away w/ more compression.

CompOrngGT · 02-22-2007, 07:20 AM

yes, some custom cams are designed to bleed some compession, some just loose some due to overlap. 11:1 is a good safe limit, but you'll always have to run 93 after that. if you're staying NA, or small shot nitrous, you can go with a nice lightweight I beam rod, instead of an H beam.

r3dn3ck · 02-22-2007, 12:03 PM

forged goodies in the bottom end are just there to add strength. it will allow you to get your car up to the limit of its potential without as much risk of grenading it thanks to a weak link in the rotating assembly. It's not insurance it's just risk avoidance. Any power adder can be turned up on a motor properly built with forged parts far higher than it can on a motor built with cast parts. Our stock rods are forged... they're just not rated for the kind of power most guys will want to shove at them. They are forged from powdered metal which causes each grain of metal to weld to all its neighbors. Too bad they're not rated for nearly as much power as we want. In a more stout version they would be a great option.

My motor will be at 10.2-10.5:1 which is about as tall as you should go on california 91 octane gas. 11:1 would require a bit of adjustment to the tune at the expense of power so that a bad tank of gas wouldn't be a potential engine killer and it would make it very difficult to pass the sniffer.

If you can afford a forged shortblock... do it. There's no reason not to other than expense. Then we can slap a nitrous kit on your ride.

02-21-2007, 04:42 PM	#1 (permalink)
jjtgiants jjtgiants Join Date: Jan 2005 Location: Dublin, CA Posts: 3,764	forged internals & N/A??? Noob question..... Forged internals make a stronger engine are, but are there any advantages to having forged internals and staying N/A? I'm assuming that if I forged my internals the compression would more than likely drop from 10:1:1 to about 8:5:1 (just a guess) and I would lose power, but is there a way to forge the internals and safely up the compression past the 10:1:1 ratio and gain power?

02-21-2007, 05:19 PM	#2 (permalink)
03gtmustang Super Moderator Join Date: Jan 2005 Location: Northern Va Posts: 3,247	Yes, but then you run too much and youll need race gas. __________________ D&D Auto Detailing -Dan

02-21-2007, 05:21 PM	#3 (permalink)
3V2000GT 46MONSTER Join Date: Jan 2006 Location: Wheaton, IL Posts: 2,209	if you forge your internals you wont lower compression. Compression depends on what pistons you have, lower the compression= less power better for turbo supercharged cars, higher compression= more power NA. I have forged internals and Im NA, I have the highest compression without having to use race gas forged internals = good less to worry about, your crank is already forged __________________ 2000 GT Black on Tan, TKO 600: 370rwhp 370rwtq NA Built 3v 2004 Honda CBR 600 F4i Black/Red 2000 SVT Lightning Silver i love jinny!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!! lucky is awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

02-21-2007, 05:21 PM	#4 (permalink)
silverstang04 DTP Join Date: Jul 2006 Location: Plano Posts: 290	Not a pro at this but I think you would want to go with high compression pistons. Not really sure, the pros will be here in a minute. __________________ Intercooled Procharger p-1sc-2,Steeda tri ax short shifter, steeda caster camber plates,Black Fr500's,255 40 17x9's front, 315 30 18x10's back, SCT2 tuner,BBK cold air, BBK 75mm T/B Plenum Combo,Mac o/r x pipe, flow master 50's, HPM Mega Bite jr lower control arms, Eibach sport line springs, KYB struts,KYB 8 way shocks in rear. FRPP 3.73's,FRPP Aluminum Drive shaft, [/center]

02-22-2007, 07:20 AM	#9 (permalink)
CompOrngGT Senior Member Join Date: Feb 2007 Location: Tonawanda (Buffalo 'burbs) Posts: 118	yes, some custom cams are designed to bleed some compession, some just loose some due to overlap. 11:1 is a good safe limit, but you'll always have to run 93 after that. if you're staying NA, or small shot nitrous, you can go with a nice lightweight I beam rod, instead of an H beam. __________________ Tim\|Team Evil Pumpkin Racing 04 Competition Orange GT with the works - Modulars FTW. Going back to Vortech, looking for mid 11's... this time I'm serious. Recovering Kenne Bell user.

02-21-2007, 07:04 PM	#6 (permalink)
bassman97 blank Join Date: Jun 2006 Location: North Jersey Posts: 1,497	Usually the OEMs won't put more than 11:1 in their cars to run on pump gas so that is probably a good limit to abide by.

02-22-2007, 06:53 AM	#8 (permalink)
bassman97 blank Join Date: Jun 2006 Location: North Jersey Posts: 1,497	This question though is tough to answer since it also depends on the cam. If you have a profile w/ more overlap, then you can get away w/ more compression.

02-22-2007, 12:03 PM	#10 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 7,018	forged goodies in the bottom end are just there to add strength. it will allow you to get your car up to the limit of its potential without as much risk of grenading it thanks to a weak link in the rotating assembly. It's not insurance it's just risk avoidance. Any power adder can be turned up on a motor properly built with forged parts far higher than it can on a motor built with cast parts. Our stock rods are forged... they're just not rated for the kind of power most guys will want to shove at them. They are forged from powdered metal which causes each grain of metal to weld to all its neighbors. Too bad they're not rated for nearly as much power as we want. In a more stout version they would be a great option. My motor will be at 10.2-10.5:1 which is about as tall as you should go on california 91 octane gas. 11:1 would require a bit of adjustment to the tune at the expense of power so that a bad tank of gas wouldn't be a potential engine killer and it would make it very difficult to pass the sniffer. If you can afford a forged shortblock... do it. There's no reason not to other than expense. Then we can slap a nitrous kit on your ride.

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