Building a beast...doing a 391 - Page 5 - ZR-1 Net Registry Forums

XfireZ51 · 08-15-2018

Nice work by Dr. Greekenstein.

Nacho_ZR1 · 08-22-2018

Quote:

Originally Posted by EvanZR1

Car is off to Pete's.

Hi Evan! Longtime no speak

GORGEOUS SteelBlue! That was always my fave color on the Z's!

Good luck with the build and I will be subscribed to this thread watching your progress

-Carlos

EvanZR1 · 08-24-2018

Motor is assembled and going in:

Pete also started tearing down the old engine, and turns out it wasn't a head gasket. Said it it looked like it swallowed a worm clamp. His guess is someone left one sitting somewhere when doing maintenance at some point in the past and it got sucked in and probably sat in the intake manifold, then finally worked it's way into #6 cylinder. Cracked the liner, bent the valves and damaged one of the cams. Would certainly explain why it wasn't running well.

EvanZR1 · 09-04-2018

Motor is back in the car and running:

But of course nothing goes smoothly, Pete said the voltage was dropping the longer the car runs, so time for a new alternator. Also waiting on shocks to come back from being machined to fit coil overs. Few other minor issues to fix once all that's done, but it's getting closer.

Pete also fixed the fit of the exhaust:
Previous:

Fixed:

JThomas · 09-04-2018

You are getting her dialed in.

XfireZ51 · 09-04-2018

Dr. Greekenstein does good work.

Nacho_ZR1 · 09-04-2018

Lookin gorgeous! And your car will be ready just in time for the Texas Mile Shootout happening Oct. 26-28 in Victoria TX

https://www.theusmileracing.com/dates-and-schedules/

EvanZR1 · 09-20-2018

No new pics but a few updates:

First off, the alternator was putting out low voltage, so that had to be replaced.
Next up, the new stainless FIC injectors that were put in by the previous owner were not performing properly. Car would not idle properly and wasn't getting enough fuel. Pete put in Accels for the primaries and a low mileage set of 94 injectors he had available for the secondaries and it's now running great.
Still waiting on shocks to come back from being machined for DRM coilovers
Turns out the seats that were put in as part of interior restoration were 1990 seats. Problem is that 1990 seats used power recline adjusters, so Pete had to do a custom wiring job to get that to work. So I can now adjust recline and side bolsters, which is very important to me as most people recline the seat too far for proper driving position.
Dash cluster has been pulled to be sent out for rebuild (tach was way off and LCD was dim).

So things are moving along well, and I can see the light at the end of the tunnel.

JThomas · 09-20-2018

Wow! Keep at it, it will be running and turning great times in no time!

Flyman 27 · 09-21-2018

That engine is a beauty alright!

08-15-2018	#41
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,706	Re: Building a beast...doing a 391 Nice work by Dr. Greekenstein. __________________ [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

08-24-2018	#43
EvanZR1 Join Date: Nov 2010 Location: Omaha Posts: 403	Re: Building a beast...doing a 391 Motor is assembled and going in: Pete also started tearing down the old engine, and turns out it wasn't a head gasket. Said it it looked like it swallowed a worm clamp. His guess is someone left one sitting somewhere when doing maintenance at some point in the past and it got sucked in and probably sat in the intake manifold, then finally worked it's way into #6 cylinder. Cracked the liner, bent the valves and damaged one of the cams. Would certainly explain why it wasn't running well. __________________ Evan 2024 Z06 SOLD - 1991 Admiral Blue ZR-1 SOLD - 2012 Carlisle Blue Metallic ZR1 - 800HP SOLD - Steel Blue 91 391cid ZR-1 #391 SOLD - Black 91 ZR-1

09-04-2018	#44
EvanZR1 Join Date: Nov 2010 Location: Omaha Posts: 403	Re: Building a beast...doing a 391 Motor is back in the car and running: But of course nothing goes smoothly, Pete said the voltage was dropping the longer the car runs, so time for a new alternator. Also waiting on shocks to come back from being machined to fit coil overs. Few other minor issues to fix once all that's done, but it's getting closer. Pete also fixed the fit of the exhaust: Previous: Fixed: __________________ Evan 2024 Z06 SOLD - 1991 Admiral Blue ZR-1 SOLD - 2012 Carlisle Blue Metallic ZR1 - 800HP SOLD - Steel Blue 91 391cid ZR-1 #391 SOLD - Black 91 ZR-1

09-04-2018	#45
JThomas Join Date: May 2008 Location: Okemos, MI. Posts: 1,193	Re: Building a beast...doing a 391 You are getting her dialed in. __________________ Joe Thomas Corvette Club of Michigan NCRS-Michigan Chapter Member NCM Master Ambassador NCM Lifetime Member Former NCM Board Member 1991 ZR-1 Melon Copper Metallic/Black 1992 ZR-1 Bright Red/Black (Sold) 1995 ZR-1 Bright Aqua/Gray (Sold) 2012 ZR1 Super Sonic Blue / Dark Titanium

09-04-2018	#46
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,706	Re: Building a beast...doing a 391 Dr. Greekenstein does good work. __________________ [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

09-04-2018	#47
Nacho_ZR1 Join Date: Nov 2010 Location: Cedar Hill, Texas Posts: 154	Re: Building a beast...doing a 391 Lookin gorgeous! And your car will be ready just in time for the Texas Mile Shootout happening Oct. 26-28 in Victoria TX https://www.theusmileracing.com/dates-and-schedules/ __________________ [B][U]---SOLD BUT NOT FORGOTTEN---[/U][/B] [SIZE="1"][SIZE="2"]1992 ZR-1 #483 [COLOR="DarkRed"]Dark Red Metallic[/COLOR] [U][B]Mods[/B][/U] -Jeal headers -Stock exhaust with X-pipe -4.30 Gears -Corey Henderson tune -375 RWHP[/SIZE][/SIZE]

09-20-2018	#48
EvanZR1 Join Date: Nov 2010 Location: Omaha Posts: 403	Re: Building a beast...doing a 391 No new pics but a few updates: First off, the alternator was putting out low voltage, so that had to be replaced. Next up, the new stainless FIC injectors that were put in by the previous owner were not performing properly. Car would not idle properly and wasn't getting enough fuel. Pete put in Accels for the primaries and a low mileage set of 94 injectors he had available for the secondaries and it's now running great. Still waiting on shocks to come back from being machined for DRM coilovers Turns out the seats that were put in as part of interior restoration were 1990 seats. Problem is that 1990 seats used power recline adjusters, so Pete had to do a custom wiring job to get that to work. So I can now adjust recline and side bolsters, which is very important to me as most people recline the seat too far for proper driving position. Dash cluster has been pulled to be sent out for rebuild (tach was way off and LCD was dim). So things are moving along well, and I can see the light at the end of the tunnel. __________________ Evan 2024 Z06 SOLD - 1991 Admiral Blue ZR-1 SOLD - 2012 Carlisle Blue Metallic ZR1 - 800HP SOLD - Steel Blue 91 391cid ZR-1 #391 SOLD - Black 91 ZR-1

09-21-2018	#50
Flyman 27 Join Date: Apr 2017 Location: Wayne Illinois Posts: 402	Re: Building a beast...doing a 391 That engine is a beauty alright! __________________ 91-#1935 Black/black & gray, Haibeck 500 Cams by Pete