Couple questions on fresh build?

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SchnellGhostTy

New member
Ok so this is the third time I've done this to the Ty, First time I blew the head gaskets, second time I didn't check the clearance on the Eagle Rods and finally this last time the shop F'd up the welding on the oil pan turbo return line bung. Now its finally all back together and in the truck again.

Issues:
***Vacuum only at 9 InHg (Anyone know what I should be running for vaccum?)

***Turbo is spooling 15psi when it was only at 10psi previously... Running straight wastegate spring so not sure whats up with that...

***Truck drives like it has a gigantic boost leak, no power and laggy...

Now what I've done

Pressure tested and found a couple of leaks with some couplers, RPM 58MM Throttle body, two vacuum lines and the only other spot the shop welded on the turbo outlet. So the turbo cold housing is going in for welding again tomorrow and the couple little leaks are being sealed and left to dry over night. With that being said I don't think that these small leaks would cause that big of an issue or am I wrong? I did disconnect the brown wire to set the timing to zero too, but if were off a touch could that be causing it be real laggy and overboost?

Thanks in advance, its been so long in between these builds I might be forgetting something stupid too.

Alex
 
Jimmy

Jimmy

Banned
Re: Couple questions on fresh build?

SchnellGhostTy said:
Ok so this is the third time I've done this to the Ty, First time I blew the head gaskets, second time I didn't check the clearance on the Eagle Rods and finally this last time the shop F'd up the welding on the oil pan turbo return line bung. Now its finally all back together and in the truck again.

Issues:
***Vacuum only at 9 InHg (Anyone know what I should be running for vaccum?i
Click to expand...
-20-22 @ idle.
 
S

SchnellGhostTy

New member
Re: Couple questions on fresh build?

ok I thought that was way low, I couldn't remember if a 6 cyl ran more or less than my old 4 cyl... Thanks, I figured out the wastegate and BOV should really be ran into different locations behind the throttle so I'm going to fix that as well tonight and give her another run tomorrow after I get the turbo back and see if that fixes at least one of the issues but again the truck actually ran like this at one point...
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: Couple questions on fresh build?

What cam? I run a larger cam and only get 12hg. FWIW, at our altitude 17 is considered decent.
 
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SchnellGhostTy

New member
Re: Couple questions on fresh build?

comp 412 cam,
I'm actually working on it today finally so I'll post back later! Turbo has been re-welded and the two small vacuum leaks are drying...
 
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SchnellGhostTy

New member
Re: Couple questions on fresh build?

ok I'm stumped... Overboosting, and no power/laggy, only seeing about 9 inhg... But feels a bit better. Mike I know your down south but if your up north at all I'll buy ya some beer or something if you'd be able to take a look under the hood? I can't really drive it like this. I feel like it might be something stupid since I seem to only work on this thing for like 2-3 months every 6 months I feel like I might have forgot something or possibly a tuning issue but I have not changed enough to make a difference since I was down at revolutions tuning it with you about 6 months ago. Since then I've added an ATR Upper cooler, new water pump and fuel pressure gauge...
 
DaveP

DaveP

Active member
Re: Couple questions on fresh build?

SchnellGhostTy said:
ok I'm stumped... ..... no power/laggy, only seeing about 9 inhg........
Click to expand...

Hmmm. "Stumped", "no power" and "low vacuum" are all symptoms that can be applied to a lower intake gasket blown out into the valley. Very difficult to detect, thus the "stumped" part.

If you don't have the OEM, aluminum-sandwich Victor Reinz intake gaskets, this could be a real possibility. You should be able to determine the type of intake gasket that's installed by close inspection of the gasket color and composition..
 
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SchnellGhostTy

New member
Re: Couple questions on fresh build?

I know for a fact that they are not a metal gasket, just a normal composite material... RPM has supplied these... and they did not have any options for what material they were made out of. So oem gasket was a metal on the lower intake manifold? What about lower to upper? WTF, I'm going to be pissed lol.
 
DaveP

DaveP

Active member
Re: Couple questions on fresh build?

SchnellGhostTy said:
I know for a fact that they are not a metal gasket, just a normal composite material...
Click to expand...

Read it again: aluminum-sandwich Victor Reinz intake gaskets.

The OEM VR gasket is a piece of aluminum sandwiched between two thin pieces of an orange-ish composite gasket material. The aluminum is used to provide strength to the thin but long spans above and below the double-port on each head.
 
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SchnellGhostTy

New member
Re: Couple questions on fresh build?

lovely... So they are out of business too, what does everyone do in this case then?!
 
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SchnellGhostTy

New member
Re: Couple questions on fresh build?

Thats what I used, felpro reinforced, like what hood sells... Anyway of checking if its actually leaking from there?
 
Throws

Throws

Active member
Re: Couple questions on fresh build?

SchnellGhostTy said:
Thats what I used, felpro reinforced, like what hood sells... Anyway of checking if its actually leaking from there?
Click to expand...

Not that I know of. Dave might have a way to determine it, though.... but I ended up pulling my intake since I screwed up and sprung a leak on the rear of the intake/block seal.

-P
 
DaveP

DaveP

Active member
Re: Couple questions on fresh build?

I've never had this happen, so I don't know if this would actually work, but this is what I'd do:
Pull the upper. The runners aren't very long, perhaps 4" or so to the head. Use a tiny inspection mirror, or make some probes out of paperclips with a bent over end that you could use to 'probe' the gasket with. If you can insert the probe between the head and manifold, the gasket has most likely failed. (Blown out into the valley). It's going to be one of the paired cyls. 2&4, or 5&7.

Taking the upper off, and conduction some inspection should be conclusive. If the gasket is OK, put the upper back on. R&R'ing the upper is an hour max job.
 
Quickstop [UK]

Quickstop [UK]

Combating adversyty.
Re: Couple questions on fresh build?

What about taking the valve covers off and then loosening all the intake valves? Apply pressure to the throttle body with the bike tube test and if you have a leak then it will hiss air into the valley.

:2cents:
 
DaveP

DaveP

Active member
Re: Couple questions on fresh build?

Quickstop [UK] said:
What about taking the valve covers off and then loosening all the intake valves? Apply pressure to the throttle body with the bike tube test and if you have a leak then it will hiss air into the valley.
Click to expand...

Removing the valve covers is more work than removing the upper intake.
Removing the valve covers is not necessary to renew the lower intake gaskets. (Removing the upper is integral to renewing the lower gaskets. So no 'extra' work involved).
A visual indication is more conclusive than a guess at where the hiss is coming from.
Why mess with the valve adjustment if there's nothing wrong with the way it is now?

I'm surprised to see this approach suggested by an individual that by all rights should be scared shitless to touch his valve adjustment after all the trouble he had getting it sorted out. IIRC, it was a couple of years of "clickies" posts before you got it resolved. Cheers.

Both methods suggested are hypothetical, in that neither of us has actually employed the technique to diagnose lower intake gasket failure. But on the merits, I like my method better. Less work, more conclusive results, and mine doesn't molest systems and parts that don't need to be to effect the actual repair.
 
The Bronze

The Bronze

New member
If you guys are looking for conclusive w/o disassembly, then you can use a smoke machine to induce a visual aid in detecting the source of the leak (if any).
 
DaveP

DaveP

Active member
Re: Couple questions on fresh build?

I am always looking for ways to do things utilizing the resources I have available to me. A smoke machine is not one of them. Yes that would be great if one was available to the OP.
 
berzerker

berzerker

wookie
Re: Couple questions on fresh build?

alexx before you start tearing apart anything let Dan c. and i take a look at it and put it on datamaster for you. we can do this this evening if you would like . call me at 720-261-1884
 
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SchnellGhostTy

New member
Re: Couple questions on fresh build?

Alright guys thanks for the pointers. I'm going to smoke it tomorrow at my gf's shop. I'm not going to mess with the valves bc I know they're correct. This is frustrating since you can't get parts for these trucks anymore... The truck ran great before I replaced the water pump and polished shit... Yes I've had some issues over the past couple years but its bc these trucks are so different then the euros I've tuning for ten years. It's an entirely different mind set lol. Anyways thanks again and ill post the results of smoking it tomorrow
 
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