That is weird, with any turbo upgrade you should see lower egt's not higher..... I am starting to think that exhaust brake,, I guess we will find out soon

Kevin

 

I cut+checked the exhaust to see if the muffler came apart internally and it was fine,

pulled the brake, and replaced it with the stock elbow, and then started it cold, no espar at -2C,

It started pretty ruff, with blueish smoke and went straight to the 1000 rpm idle, Need to run some howes meaner cleaner threw it.

Got it up to operating temps, then floored it, and struggled to get to 1300, 36psi, in 6th at 2700rpm, (140km/h), on pavement. Better then yesterdays temps.

This afternoon, as it gets above freezing, I ll head back down that same soft gravel road, and try 5th, at 2500 rpm see how hot it gets. For a equal test.

I also put a plastic lunch bag with a zip tie around it, on the breather and it filled up quickly at idle, but there was no steam or anything. Does this tell me anything homestead?

 

i thinhk that the brake is messed up. is ur brake run off motor vacum or does it have an aftermerket pump. If after market, pump might be screwed. im not sure.

 

Here is a pic of my boost/leak tester. It is as simple as it looks. Just a 4" to 3" rubber plumbing connector with a 3" pipe cap in the end. I tapped it for the air hose and the pressure gage but you can just use an air fitting and plug your compressor hose right on to it. You can set your compressor regulator to 20-25 lbs and pressurize it. It's not very clear on the end of theI use the needle valve to make air control a little easier without having to hook and unhook the compressor.




Blue....

It's hard to say what's filling the bag on your blow by tube at idle. You don't make boost or pressure at idle. But when your running, you could have compression going past the rings on a cylinder? At idle, it takes me a bit of time to inflate a bag, basically usual blowby. If I go for a run, I'll just blow it off entirely because everything goes up the intake guides into the valve cover.


For what they are worth and as easy as they are to use, make a boost tester and at least try and eliminate that aspect of the problem. If something is leaking, this test will show it.

Jeff

 

Did you put the bag on it when it was cold, or hot? You're gonna have a lot more blow by when cold since the rings are gonna have a bigger gap. Get it hot, then do it. End gap on the rings will be much tighter, so less blow by. A compression check would be the better thing to do, as a set of bad guides will pressureize the crank case, but your cylinders are still good.

 

Dodger, the exh brake runs off a air compressor. It usually works good, the odd leak, and for a while last summer it wanted to stay engaged after the switch was shut off, bd some wd 40 in the regulator fixed that.

Good picture, looks easy enough to build, maybe that will bring out the rest of the problem.

Tate, I put the bag on when its cold, so that blowby is normal? ...until the engine is up to operating temps.

drove around some more later on today, with the same results 1300/36psi, still seems high for aa stock fueled truck.

 

Did you pull any numbers off of the turbo? Do you still have the stocker? Might be worth swapping in the stocker, see if it goes up/down, and then contact whoever sold you the 62 for some support.

I don't know how much blow by is normal. Never tried that on my truck before. But that might not even be blow by, could be what Jeff had. A compression test will tell you if you have a leak, and then you can narrow it down from rings to valves or head gasket, etc. If it were leaking past your valve guides/seals, you'd still see gases coming out of the crank case, but shouldn't affect your performance (as much, would leak boost if on intake valves).

Whats stock boost on those trucks? 36 sounds high for a stocker. Does any of those programmers or boxes leave any residual in the ECM that would cause it to fuel more than stock? Those 3rd gens are all greek to me.

 

It said 62/80 on the turbo, I do have the stock turbo, but it needs a new compressor wheel, Thats the reason I got the 62/80. My orginal plan was to fab up a set of twins using the stocker + a k31, a phat shaft was a the second, but probably smarter choice,

Boost with a bone stock truck will hit 32, then settle at 28-29psi. Ive never read anything about the tst leaving any "memory" in a stock ecm, but....

The only other box on it was a ez, NO programmers yet. Maybe a Smarty someday

 

ecm's will learn a tst. The ecm on a 3rd gen will do adative learning. Unhook your batteries then touch the positve and negative cable together to drain the ecm. 36 dosent sound bad, even without a progammer. The 600 engine will boost slightly higher than my 03, and I could hit 32 easy when stock on my truck.

Kevin

 

Just thought I'd say So long suckers!!!!

Going to Cuba for a week. Enjoy the snow!

 

They are paying Apprenti WAY too much these days !



Have a safe and fun trip Tate !


PS, bring back some Cohibas and sell them on e-bay...

 

Good luck Tate... Hope its work related...

 

Say "Hi" to the cuban ladies for me Tate....

 

never mind selling the cigars on ebay, i'll take 'em.

 

Well wouldnt know how the heck it happened, but I am in the running for TOM, vote here, lol
https://www.dieseltruckresource.com/...d.php?t=141607


Have a great day everyone

Kevin