Cooling Port for 1990 Lt5 - ZR-1 Net Registry Forums

ZuggZR1 · 08-04-2019

This cooling connection came off my 1990 ZR1. How does it connect so I can make sure it dont come off again. Im very new to corvette ownership so please dont be to cruel LOL

efnfast · 08-04-2019

It's a press fit.
Where did you get that siamesed plenum?

Paul Workman · 08-04-2019

Steve is right; orignially a press-fit.

Couple options:

A machine shop may be able to fix it
You could pull the plenum and drill/tap the coolant port with a 3/8" plug in the Injector housing, and (for show) JB Weld the connector to the plenum. (unless you drive in SUB ZERO (Fº) temps you'll NEVER need to heat the TB. AND, the plenum will run considerably cooler which benefits the ignition module that is attached under the plenum).

Welcome to the BROTHERHOOD OF THE BEAST! (And, who's ZR-1 was that??)

ZuggZR1 · 08-04-2019

was my good friend ( like a brother) Tony Zulkowsi from De

ZuggZR1 · 08-04-2019

Yeah I live in NC no major sub zero here. So for the time being your saying JB weld till I can get to a machine shop? Look slike it has a grey putty like sustance on it now possible JB weld

ZuggZR1 · 08-04-2019

here is full view of the engine.

This is a DRM 500 ZR1

billschroeder5842 · 08-04-2019

Thank is a great looking engine

Ccmano · 08-04-2019

Does coolant come out when you start the engine?
H

TX '90 ZR1 · 08-04-2019

Quote:

Originally Posted by ZuggZR1

Yeah I live in NC no major sub zero here. So for the time being your saying JB weld till I can get to a machine shop? Look slike it has a grey putty like sustance on it now possible JB weld

I don't think Paul is recommending you JB Weld the fitting and use it. Think he is referring to blocking the coolant flow from the plenum with the plug (there are posts here on the forum detailing the procedure) and using the JB Weld to hold the fitting in place to give it a stock look.

ZuggZR1 · 08-04-2019

It did but plugged it back it and is staying but rather fix it right so not an issue

08-04-2019	#2
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,416	Re: Cooling Port for 1990 Lt5 It's a press fit. Where did you get that siamesed plenum?

08-04-2019	#3
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Re: Cooling Port for 1990 Lt5 Steve is right; orignially a press-fit. Couple options: A machine shop may be able to fix it You could pull the plenum and drill/tap the coolant port with a 3/8" plug in the Injector housing, and (for show) JB Weld the connector to the plenum. (unless you drive in SUB ZERO (Fº) temps you'll NEVER need to heat the TB. AND, the plenum will run considerably cooler which benefits the ignition module that is attached under the plenum). Welcome to the BROTHERHOOD OF THE BEAST! (And, who's ZR-1 was that??) __________________ Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry

08-04-2019	#4
ZuggZR1 Join Date: Jul 2019 Location: Holly Springs, NC Posts: 91	Re: Cooling Port for 1990 Lt5 was my good friend ( like a brother) Tony Zulkowsi from De

08-04-2019	#5
ZuggZR1 Join Date: Jul 2019 Location: Holly Springs, NC Posts: 91	Re: Cooling Port for 1990 Lt5 Yeah I live in NC no major sub zero here. So for the time being your saying JB weld till I can get to a machine shop? Look slike it has a grey putty like sustance on it now possible JB weld

08-04-2019	#7
billschroeder5842 Join Date: Nov 2016 Location: Southlake, TX Posts: 588	Re: Cooling Port for 1990 Lt5 Thank is a great looking engine __________________ Bill Schroeder Texas Proud! 1991 Corvette ZR1 #1388 2015 Challenger Scat Pack Shaker

08-04-2019	#8
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Cooling Port for 1990 Lt5 Does coolant come out when you start the engine? H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

08-04-2019	#10
ZuggZR1 Join Date: Jul 2019 Location: Holly Springs, NC Posts: 91	Re: Cooling Port for 1990 Lt5 It did but plugged it back it and is staying but rather fix it right so not an issue