Frankenplenum - Page 7 - ZR-1 Net Registry Forums

Mr Blue · 02-11-2015

Something similar to the Ford / Yamaha SHO plenum might be interesting. Long runners on the primaries and short direct runners for the secondaries. Hood clearance would be a nightmare, but that engine ran extremely well for 3.0 L.
David

Z06scentair · 02-11-2015

Quote:

Originally Posted by Mr Blue

Something similar to the Ford / Yamaha SHO plenum might be interesting. but that engine ran extremely well for 3.0 L.
David

Yes it did!

LGAFF · 02-11-2015

The nice thing about the removable top is I can try several different things...divided plenum, reduced runner length, air horns/stacks...maybe even a clear top just for shits and giggles

rkreigh · 02-12-2015

at BG when kirchoffer fired up the cammy 421 we could see the top which looked like it was made out of a 1/4 plate of nice alum (about 2 ft by 20 inches or so) would flex and pop like a beer can

it was pretty amazing, but it didn't deliver the big hp hoped for and it was a solid looking design with nice taper built into the runners, injectors on the outside, and a big plenum box

I'm more enamoured with the look and audaciousness of the cross ram individual throttle body

those big caliope stacks bring back memories of screaming big blocks at the drags in little altered cars and some door slammers only the blower cars were cooler!

the injector housing creates a rather torturous path with the s bend

cutting up and rewelding the OBX would be a major chore, but it's cost effective would look like the corvette racers (which have beautiful carbon fiber cross rams)

with the 3d printing technology, we could print up and individual base and then cast it. with the right media, like a heavy nylon plastic, it would probably work right off the printer with a heat insulating gasket

anyone want to give this a go? tuning will be tough, me thinks the megasquirt piggy backed into the factory ecm to run the spark and injectors would do nicely there

I may yet try one of these on my c3 to see how well it works out on a little screamin 4.8 iron block

the short stroke revs up nicely and the car is light enough to make this work

cheers!

LGAFF · 03-12-2015

cvette98pacecar · 03-12-2015

Quote:

Originally Posted by LGAFF

Lee, how about a photo from the front and side Horizontally to show the height.

LGAFF · 03-12-2015

I will get one, have not picked it up yet...put it should have added 1/2 inch or so...will get some this weekend

Tony Davila · 03-13-2015

Quote:

Originally Posted by LGAFF

It looks like you are building or modifying the intake just like this ZR-1 that is in Japan. Keep it up, I'm watching how it turns out.

LGAFF · 03-14-2015

We will address cosmetics with epoxy at some point to make it "prettier"

I matched the curve on the back with alittle finesse and a vise

LGAFF · 03-14-2015

The runner no longer is part of the wall at the top which will help flow also

02-11-2015	#61
Mr Blue Join Date: Feb 2013 Location: Tallmadge OH Posts: 116	Re: Frankenplenum Something similar to the Ford / Yamaha SHO plenum might be interesting. Long runners on the primaries and short direct runners for the secondaries. Hood clearance would be a nightmare, but that engine ran extremely well for 3.0 L. David

02-11-2015	#63
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,195	Re: Frankenplenum The nice thing about the removable top is I can try several different things...divided plenum, reduced runner length, air horns/stacks...maybe even a clear top just for shits and giggles __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 02-11-2015 at 09:50 PM.

02-12-2015	#64
rkreigh Join Date: Jan 2004 Location: Alex VA Posts: 1,089	Re: Frankenplenum at BG when kirchoffer fired up the cammy 421 we could see the top which looked like it was made out of a 1/4 plate of nice alum (about 2 ft by 20 inches or so) would flex and pop like a beer can it was pretty amazing, but it didn't deliver the big hp hoped for and it was a solid looking design with nice taper built into the runners, injectors on the outside, and a big plenum box I'm more enamoured with the look and audaciousness of the cross ram individual throttle body those big caliope stacks bring back memories of screaming big blocks at the drags in little altered cars and some door slammers only the blower cars were cooler! the injector housing creates a rather torturous path with the s bend cutting up and rewelding the OBX would be a major chore, but it's cost effective would look like the corvette racers (which have beautiful carbon fiber cross rams) with the 3d printing technology, we could print up and individual base and then cast it. with the right media, like a heavy nylon plastic, it would probably work right off the printer with a heat insulating gasket anyone want to give this a go? tuning will be tough, me thinks the megasquirt piggy backed into the factory ecm to run the spark and injectors would do nicely there I may yet try one of these on my c3 to see how well it works out on a little screamin 4.8 iron block the short stroke revs up nicely and the car is light enough to make this work cheers! __________________ 95 390 LPE ZR1 (505 rwhp) LSV = Lingenfelter Super Vette Twin Turbo 2003 Z06 (800 RWHP) Last edited by rkreigh; 02-12-2015 at 08:21 AM.

03-12-2015	#65
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,195	Re: Frankenplenum __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

03-12-2015	#67
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,195	Re: Frankenplenum I will get one, have not picked it up yet...put it should have added 1/2 inch or so...will get some this weekend __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

03-14-2015	#69
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,195	Re: Frankenplenum We will address cosmetics with epoxy at some point to make it "prettier" I matched the curve on the back with alittle finesse and a vise __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

03-14-2015	#70
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,195	Re: Frankenplenum The runner no longer is part of the wall at the top which will help flow also __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359