Billet 3.0L Crank?? - Page 2 - 3000GT/Stealth International Message Center

Gray Haze · 01-16-2008, 07:29 PM

If your making 3d models of a crank shaft to make a billet crank to then write the program for the NC to cut it, it would be no problems to modify the demensions of the stroke on the crank to add displacement, would require custom rods/pistons. Which is stuff you will more than likely replace anyways if your going to be getting a billet crank.

JasonY · 01-16-2008, 07:32 PM

Also, FWIW, another option is NEVER a bad thing. If one is made, im sure plenty would be sold!

Jason

Devilmightcry · 01-16-2008, 08:38 PM

i think it's a good idea.sure for 3.0L is harder to spool a big turbo, but you have another advantage. on 3.0L engine you can rev alot higher than stroked engine. so you basicly will have power band if you rev the angine to 9500-10k rpm. how do you think the GT-Rs make power when they spool a big turbo at 6k rpm. it's because they rev up to 9500-10k rpm. so they'll have 3500 to 4k rpm power band. you need to to fully balance the engine, but it'll be alot cheaper that making custom rods and pistons.

ras463us · 01-16-2008, 09:11 PM

For the sake of discussion. I would propose that any billet offering be able to be made within the following specs

Main journals: 60mm to 64mm
Rod journals: 50mm to 55mm
Stroke: 76mm to 95mm

The combination of a 95mm stroke, 50mm rod journal, 64 main journal dropped into a 6g74 block, bored +2mm(to 95mm) would result in a 4.0L stroker. With very minimal clearancing work to do.

Devilmightcry · 01-16-2008, 10:33 PM

but that's for 74 block. i think that would be a good idea too if we make a bilet 6g74 crank, but with smaller Main journals, then make a custom rods and piston if we were unable to use available pistons from 72 engine. that would save a lot of time and money for redesigning a new crank. but i would still think the rods and pistns are going cost more.
still having a stock stroke bilet crank is way better than not having any option and end up using our crapy crank. i was thinking to get a stock stroke bilet crank for my next project, because i was sure a stroker would cost much more to buy.

Darksurfr · 01-16-2008, 11:22 PM

If multiple options are available thats cool but if we can only get a stock Billet piece made thats cool too i think because our cars arent getting any newer and neither are the parts...nor are there lots of spares just lying around.

Plus then the cad work is done for the future to make multiple...just save it and put it into multiple machines right? I am taking a wild guess as they work like that?

ras463us · 01-17-2008, 07:22 AM

All I'm suggesting is that, if this is actually going to happen, lets actually put out there what people are looking for. A stock billet crank, unless cheaper than a factory forged unit, is not going to sell very well. IF the manufacture designs there CAD/CAM files properly and starts with the right sized block of material, many options should be available. Ross and Wiseco both offer there 72 and 74 pistons in any bore and CR for the regular price. Custom billet rods are no more expensive than off the shelf units.

Kaddo · 01-17-2008, 06:29 PM

Quote:

Originally Posted by ras463us

All I'm suggesting is that, if this is actually going to happen, lets actually put out there what people are looking for. A stock billet crank, unless cheaper than a factory forged unit, is not going to sell very well. IF the manufacture designs there CAD/CAM files properly and starts with the right sized block of material, many options should be available. Ross and Wiseco both offer there 72 and 74 pistons in any bore and CR for the regular price. Custom billet rods are no more expensive than off the shelf units.

Only a few people on here would go threw the headache of building a motor with the machine work it takes to fit the stroked crank into the block. I personaly would like a drop in and go crank that was alot stronger then the forged uint and could be pushed harder. Your stroker is already out their go pay 12K and get the 3.7L ray made already! Whats wrong? dont want to pay the 12K either? Im talking for the guys usings small singles and td05s making 750+ that want a stronger low end. No one but nelson makes over 1000awhp...

ras463us · 01-17-2008, 09:06 PM

Good for you Kaddo! But i'm trying to progress the future of higher performace options for our cars, not just what everyone else has done. LIke I said here, and on the other thread. There are a couple of combinations that would be nice see offered as off the shelf units. Sure if someone wants to go wild, they will need a custom. But why not progress the options we have. We know that there are plenty of 3.5 blocks out there, and that they fit in our cars with minor mods. Why not offer a 3.5 crank? Why not offer the 3.8 crank, it is nearly a perfect drop in, in the 3.5 block? Why not make the 6g72/4 stroker crank, which is currently made by grinding the 74 mains from 64 to 60mm to get them to fit?

I don't understand why people are so opposed to expanding the options they have available. Just because you don't want it, doesn't mean there is't a market for it. What do you think a billet crank is going to cost? I have priced them out. Right now there not worth the price. So, how can you say that the 2X or greater cost of a stock billet crank is really going to sell over a factory forged crank. If I'm going to spend 6K on a bottom end, I want all the displacement I can get. Yes 6K, billet crank=3K---forged rods=1.5K---forged pistons=$1000---machine work=.5K. That's the cost of my 4.0L short block. What's your expected cost of your 3.0L shorty? Put the numbers to it. You might save 1K ~ 1.5K. But I'll gaurantee you that I will kick your ass for what might be an extra 10% of what you going to spend all together to get your 750hp engine.

ras463us · 01-17-2008, 09:15 PM

Quote:

Originally Posted by chops

A customer of mine(Kaddo on here) was informing me that there may be interest in making a billet 3.0 direct OE replacement crank for the 3000GT. If this were to happen it would work with all stock components and aftermarket rods/piston combos. This would be beneficial to people who are making upwards of 800+ who are having issues with the stock crank cracking/flexing. Let me know how you guys feel towards this being a possible product and also suggestions as well would be greatly appreciated.

Robert

I am merely making a suggestion to concider other combination besides the stock 3.0 direct OE replacement.

View Poll Results: What would you like to see......
Direct OE Replacement	9	52.94%
OE Replacement with custom journal sizes ect ect	8	47.06%
Voters: 17. You may not vote on this poll

01-16-2008, 07:29 PM	#11 (permalink)
Gray Haze Master Of Disaster Join Date: Mar 2002 Location: Fort Worth, Texas Drives: 3S's Since Feb 2002. Trader Rating: (26)	Re: Billet 3.0L Crank?? If your making 3d models of a crank shaft to make a billet crank to then write the program for the NC to cut it, it would be no problems to modify the demensions of the stroke on the crank to add displacement, would require custom rods/pistons. Which is stuff you will more than likely replace anyways if your going to be getting a billet crank. __________________ 1992 3000GT VR-4 #15 of 24. The ORIGINAL Sandstone Gray '99 Conversion. Personal Rate of Return from 01/01/2008 to 10/09/2008 is -50.8%. Forget early retirement for sure. www.3stech.org - Now with 100% less invite codes! Free Registration!

01-16-2008, 07:32 PM	#12 (permalink)
JasonY Fool...No man can kill me Join Date: Jul 2002 Location: Lower Delaware Drives: TT = Design Flaw.... Trader Rating: (26)	Re: Billet 3.0L Crank?? Also, FWIW, another option is NEVER a bad thing. If one is made, im sure plenty would be sold! Jason __________________ "Busting your butt doesn't guarantee success but sitting on your butt will pretty much guarantee failure" 01.5 Dodge 2500 Cummins powered - tow rig Quality Parts and Service from I.P.S.

01-16-2008, 08:38 PM	#13 (permalink)
Devilmightcry The dark shall be with us Join Date: Aug 2004 Location: MO Drives: 93' VR4 Trader Rating: (12)	Re: Billet 3.0L Crank?? i think it's a good idea.sure for 3.0L is harder to spool a big turbo, but you have another advantage. on 3.0L engine you can rev alot higher than stroked engine. so you basicly will have power band if you rev the angine to 9500-10k rpm. how do you think the GT-Rs make power when they spool a big turbo at 6k rpm. it's because they rev up to 9500-10k rpm. so they'll have 3500 to 4k rpm power band. you need to to fully balance the engine, but it'll be alot cheaper that making custom rods and pistons. __________________

01-16-2008, 09:11 PM	#14 (permalink)
ras463us '92 VR4 Join Date: Apr 2007 Location: Kansas City, MO Drives: 1992 VR4 Trader Rating: (13)	Re: Billet 3.0L Crank?? For the sake of discussion. I would propose that any billet offering be able to be made within the following specs Main journals: 60mm to 64mm Rod journals: 50mm to 55mm Stroke: 76mm to 95mm The combination of a 95mm stroke, 50mm rod journal, 64 main journal dropped into a 6g74 block, bored +2mm(to 95mm) would result in a 4.0L stroker. With very minimal clearancing work to do. __________________ Ricer: from the latin word Ricarius meaning to suck at everything you attempt A person who makes unnecessary modifications to their most often import car (hence the term "rice") to make it (mostly make it look) faster. The most common modifications are (but not limited to): - Huge exhaust that serves no purpose but to make the car louder - Large spoiler on the back that looks like something Boeing made for the 747 - Lots of after-market company stickers they don't have parts from, but must be cool - Expensive rims that usually cost more than the car itself - Body kit to make the car appear lower, usually accented with chicken wire - Clear tail lights and corner signals - A "performance intake"- a tube that feeds cold air to their engine usually located in areas of excessive heat (behind or on top of the engine) - Most of these riced cars (a.k.a. rice rockets or rice burners) are imports; Honda Civics, Accords, Integras, CRXs, RSXs, Del Sols Mitsubishi Eclipses, Lancers, Subaru Imprezas, however there are some domestics such as Chevrolet Caviliers, Dodge Neons, Ford Focus; small, slow, economy cars designed specifically to go slow. Please note that some 3000gt's Supras, Skylines, WRX's and other higher performance imports are designed to go fast, and are therefore not always considered rice, but it really depends on the severity of the case. (courtesy urban dictionary)

Sponsored Links
3000GT/Stealth International Message Center Advertisement

01-16-2008, 10:33 PM	#15 (permalink)
Devilmightcry The dark shall be with us Join Date: Aug 2004 Location: MO Drives: 93' VR4 Trader Rating: (12)	Re: Billet 3.0L Crank?? but that's for 74 block. i think that would be a good idea too if we make a bilet 6g74 crank, but with smaller Main journals, then make a custom rods and piston if we were unable to use available pistons from 72 engine. that would save a lot of time and money for redesigning a new crank. but i would still think the rods and pistns are going cost more. still having a stock stroke bilet crank is way better than not having any option and end up using our crapy crank. i was thinking to get a stock stroke bilet crank for my next project, because i was sure a stroker would cost much more to buy.

01-16-2008, 11:22 PM	#16 (permalink)
Darksurfr Stealth Like A Ninja Join Date: Nov 2004 Location: Old Bridge, NJ Drives: '91 Stealth TT Trader Rating: (14)	Re: Billet 3.0L Crank?? If multiple options are available thats cool but if we can only get a stock Billet piece made thats cool too i think because our cars arent getting any newer and neither are the parts...nor are there lots of spares just lying around. Plus then the cad work is done for the future to make multiple...just save it and put it into multiple machines right? I am taking a wild guess as they work like that? __________________ ECG '05- '08 / Attended NEG '05 - '08 / Attended

01-17-2008, 07:22 AM	#17 (permalink)
ras463us '92 VR4 Join Date: Apr 2007 Location: Kansas City, MO Drives: 1992 VR4 Trader Rating: (13)	Re: Billet 3.0L Crank?? All I'm suggesting is that, if this is actually going to happen, lets actually put out there what people are looking for. A stock billet crank, unless cheaper than a factory forged unit, is not going to sell very well. IF the manufacture designs there CAD/CAM files properly and starts with the right sized block of material, many options should be available. Ross and Wiseco both offer there 72 and 74 pistons in any bore and CR for the regular price. Custom billet rods are no more expensive than off the shelf units.

01-17-2008, 09:06 PM	#19 (permalink)
ras463us '92 VR4 Join Date: Apr 2007 Location: Kansas City, MO Drives: 1992 VR4 Trader Rating: (13)	Re: Billet 3.0L Crank?? Good for you Kaddo! But i'm trying to progress the future of higher performace options for our cars, not just what everyone else has done. LIke I said here, and on the other thread. There are a couple of combinations that would be nice see offered as off the shelf units. Sure if someone wants to go wild, they will need a custom. But why not progress the options we have. We know that there are plenty of 3.5 blocks out there, and that they fit in our cars with minor mods. Why not offer a 3.5 crank? Why not offer the 3.8 crank, it is nearly a perfect drop in, in the 3.5 block? Why not make the 6g72/4 stroker crank, which is currently made by grinding the 74 mains from 64 to 60mm to get them to fit? I don't understand why people are so opposed to expanding the options they have available. Just because you don't want it, doesn't mean there is't a market for it. What do you think a billet crank is going to cost? I have priced them out. Right now there not worth the price. So, how can you say that the 2X or greater cost of a stock billet crank is really going to sell over a factory forged crank. If I'm going to spend 6K on a bottom end, I want all the displacement I can get. Yes 6K, billet crank=3K---forged rods=1.5K---forged pistons=$1000---machine work=.5K. That's the cost of my 4.0L short block. What's your expected cost of your 3.0L shorty? Put the numbers to it. You might save 1K ~ 1.5K. But I'll gaurantee you that I will kick your ass for what might be an extra 10% of what you going to spend all together to get your 750hp engine. Last edited by ras463us : 01-17-2008 at 09:11 PM.