TOP END REFINISHING

[Franke]

Maybe that hesitation might go away with the eprom recal.

[Schrade]

Ok - just read the coolant bypass thread in entirety...

Jury still out?

My lines are painted, so bypass or not, the lines will stay.

Fuel line ok for a by pass?

[Dynomite]

Great Photos and a very colorful LT5 for sure

I am not sure why you did not just block off TB coolant with a 1/8 inch Allen Head Pipe plug (same with IH housing and Plenum TB coolant path). That would eliminate having to draw down coolant every time you remove the Plenum which I just know will be whenever you get the urge

I defined a great Coolant Filling technique which has eliminated the fear of Water Pump Air Locking after a Coolant Refill.

Are you uncertain of TB Icing? Just am interested in your opinion leading to your modifications.

Thanks,
Cliff

[Schrade]

Originally Posted by Dynomite

Great Photos and a very colorful LT5 for sure

I am not sure why you did not just block off TB coolant with a 1/8 inch Allen Head Pipe plug (same with IH housing and Plenum TB coolant path). That would eliminate having to draw down coolant every time you remove the Plenum which I just know will be whenever you get the urge

I defined a great Coolant Filling technique which has eliminated the fear of Water Pump Air Locking after a Coolant Refill.

Are you uncertain of TB Icing? Just am interested in your opinion leading to your modifications.

Thanks,
Cliff

What's up Cliff...

If [when] I pull the plenum again, I don't relish the idea of coolant getting all over cleaned parts. Mike100 said it gets dirty under there, but I do more cleaning / tuning, than driving (they called my '94 a 'garage queen' on CF before banning. Not QUITE so...).

anyway

Marc's page says 20' w/ 90% RH, can cause ice-up, and we DO get that here on RARE occasion. But I think even ONLY with sustained hammer down, under those conditions, will you get ice. And I got an extra 'radiator' up front, for the automatic, and the fans stay on most of the time, with the extra heat.

And thanks to Marc for gettin' the re-coded Memory / Calibration module back in short order here (I sure wish someone ELSE could get somethin' in the mail to me as fast as he did, for my tranny ).

Where's the info on bleeding air from coolant lines? Doesn't the air push through after a couple of Closed Loop outings?

[Schrade]

And as far as the TB coolant ports, they are kind of ugly as they are (the caps on now are just temporary).

Only thing I can think of to reduce their 'profile', is spot 'em with the Satin Black.

You got a snappic of the 1/8 inch Allen Head Pipe plugs, that you have installed?

What did the rest of you do? I'd like to keep it 're-configure-able', to OEM, just in case...

[Dynomite]

Originally Posted by Schrade

Where's the info on bleeding air from coolant lines? Doesn't the air push through after a couple of Closed Loop outings?

Getting The Air Out of the Coolant System

See Details here of how to get the Air Out of the Air Locked Water Pump Filling With Coolant and the Air Locked Water Pump

Originally Posted by Schrade

You got a snappic of the 1/8 inch Allen Head Pipe plugs, that you have installed?

See Item #4 LT5 Eliminated Systems You can get the 1/8 inch Allen Head Pipe Plugs at Summit Racing as referenced in the LT5 Eliminated Systems post

There is also a 1/8 inch Allen Head Pipe Plug inserted in the top of each Injector Housing that makes sure you do not have coolant issues when removing the Plenum. That is the Pipe Plug that actually stops the coolant flow. The other (two each side) only plug the holes in the Plenum and TB.

[Schrade]

She spun right up, second try, DESPITE:

I forgot to plug in the TPS.
Forgot to CALIBRATE the TPS.
Had the A/C head unit un-plugged.
Forgot to plug in the rear vacuum connector of the 2 at the plenum, behind the TB.
AND the vacuum connector under the TB extension!!!

I know there's air in it still - it went to about 245 pretty quick - I didn't fill with one of the coolant manifold elbows turned up...

And she's idling at about 1,250.

Anyway, still lots to do, and she'll have to wait til after Thanksgiving.

YouTube (uploading now):

http://www.youtube.com/watch?v=OqjZd...ature=youtu.be

or here

https://www.youtube.com/watch?v=OqjZd_GOaWg

[Dynomite]

Originally Posted by Schrade

I know there's air in it still - it went to about 245 pretty quick - I didn't fill with one of the coolant manifold elbows turned up...

Getting the Air Out of the Coolant System

The two coolant manifolds attached to the injector housings should get warm within 30 seconds with engine running if the water pump is pumping coolant. If not......you have to get that air out of the water pump area (Air Locked Water Pump). See LT5 Air Locked Water Pump Simplified



See LT5 Radiator and Initial Coolant Fill Tricks

[Franke]

Yeah what Dyno says but don't drink the coolant Motor looks good and it seemed to run/sound good albeit the high idle etc. Are you going to run Datamaster again?

[Schrade]

Yeah - I'll plug in DataMaster as soon as I re-calibrate TPS.

No SES for high idle tho', and it DID come on right away FIRST time (idled @ 3k then), when TPS was unplugged. After shut-off, battery dis-connect, and plugging in TPS, it dropped to 1,250. I think it's the last vacuum connector UNDER TB extension - can't remember where that one went...