Sneak Peek from LPE - Page 3 - ZR-1 Net Registry Forums

grahambehan · 05-11-2015

Quote:

Originally Posted by XfireZ51

Graham,

Its interesting to note the approach GM and Ford took with similar motors at nearly the same time. I'm referring to the LT-5 v Yamaha SHO. The SHO had a "split" plenum approach and the "bundle of snakes" runners for low and high rpm operation. Was that something Lotus/Chevy had looked into?
Hope you don't mind the queries.

Not really, mainly due to packaging constraints, instead we had a swirl primary port with the secondary masked by the port throttle. The new engine would rely on cam profile switching to modify the torque curve.

Graham.

P.S. It's alive

WydGlydJim · 05-11-2015

Let me help here........

XfireZ51 · 05-11-2015

Somebody video that motor when Graham fires it up. Post that on YouTube or something.

Graham,

How different is the engine management software etc? Any accommodations for
other ignition? Still using 9 slot reluctor?

Locobob · 05-12-2015

Very cool, can't wait to hear more about this project.

USAFPILOT · 05-12-2015

what is it? a 350?

grahambehan · 05-12-2015

Quote:

Originally Posted by XfireZ51

Somebody video that motor when Graham fires it up. Post that on YouTube or something.

Graham,

How different is the engine management software etc? Any accommodations for
other ignition? Still using 9 slot reluctor?

Megasquirt, still running 9X and it is 5.7 litre

Testing complete, now for the presentation.

See you guy's there.

Graham.

-=Jeff=- · 05-12-2015

What day is your presentation?

XfireZ51 · 05-12-2015

Quote:

Originally Posted by grahambehan

Megasquirt, still running 9X and it is 5.7 litre

Testing complete, now for the presentation.

See you guy's there.

Graham.

Is MS handling ignition or is the stock ICM doing that?

grahambehan · 05-12-2015

Quote:

Originally Posted by XfireZ51

Is MS handling ignition or is the stock ICM doing that?

Stock module, all testing complete, now just working on the presentation for Friday am.

It would be interesting to change the cams to the high torque profile though just to see what that compound torque curve would look like, oh well perhaps another day.

Graham.

Scott Clark · 05-18-2015

Here's a video we made for Graham's presentation in Bowling Green. He called to let me know we can share it now.

Graham told me, in this configuration the Lotus target power would be 500hp at 7200rpm. On the very first pull all the way to redline, the third pull overall, it made 501.1 - at 7200rpm. That's pretty awesome considering the technology at the time. There won't ever be another project like this one.

By the time Graham and Rob were done tweaking on the tune, it was at a stout 528hp on pump gas.

Huge thanks to Graham for trusting my team with this extremely unique project. I sure hope to get to work some more with you, Graham!

https://youtu.be/X-Z5oOIgv2o

05-11-2015	#22
WydGlydJim Join Date: Jan 2008 Location: Wichita, Ks. Posts: 319	Re: Sneak Peek from LPE Let me help here........ __________________ 2009 LS9 1990 LT-5/sold/Bought my Baby back 1994 Lingenfelter LT-5/sold 1973 LS4/sold

05-11-2015	#23
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,710	Re: Sneak Peek from LPE Somebody video that motor when Graham fires it up. Post that on YouTube or something. Graham, How different is the engine management software etc? Any accommodations for other ignition? Still using 9 slot reluctor? __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

05-12-2015	#24
Locobob Join Date: Jan 2004 Location: Portland, OR Posts: 1,057	Re: Sneak Peek from LPE Very cool, can't wait to hear more about this project. __________________ Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368

05-12-2015	#25
USAFPILOT Join Date: Aug 2007 Location: Spring TX Posts: 1,347	Re: Sneak Peek from LPE what is it? a 350? __________________ 1994 #293 ZR-1 Stainless Works Long Tube Headers, B&B catback w/ X-Pipe, 18" Shelby Series One Wheels, SLP CAI.

05-12-2015	#27
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,178	Re: Sneak Peek from LPE What day is your presentation? __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978

05-18-2015	#30
Scott Clark Join Date: May 2015 Location: Carson, IA Posts: 6	Re: Sneak Peek from LPE Here's a video we made for Graham's presentation in Bowling Green. He called to let me know we can share it now. Graham told me, in this configuration the Lotus target power would be 500hp at 7200rpm. On the very first pull all the way to redline, the third pull overall, it made 501.1 - at 7200rpm. That's pretty awesome considering the technology at the time. There won't ever be another project like this one. By the time Graham and Rob were done tweaking on the tune, it was at a stout 528hp on pump gas. Huge thanks to Graham for trusting my team with this extremely unique project. I sure hope to get to work some more with you, Graham! https://youtu.be/X-Z5oOIgv2o Last edited by Scott Clark; 05-18-2015 at 02:22 AM.