exhaust leak

[CUMMINS_KILLA99]

my turbo has an exhaust leak where the up pipes meet the turbo. some one told me that i could use chevy 350 donut gaskets for this problem would they work. would i also have to buy new up pipes or could i use the old ones. is there any other parts i would to fix this problem. im also throwin in a wheel since the turbo will be off any ways. does this exhaust leak effect my trucks performance.

[mako314]

a preturbo leak will kill your performance and milage, I don't know about the donuts but international has a nice set of improved uppipes that have a bellows to dampen engine vibration

[red73psd]

i had the same exsact thing... that lil y pipe of the back of the turbo that has the two up pipes comin to it were crack causing me to think both my up pipes were leaking.... i got it fixed at this place i always go to cuz its to much for me to try and tackle being stuck without a truck and not having expereince. but i notice better turbo responce 2-3 extra pounds of boost and about 45 more miles on each tank of gas but thats with me drivin it hard cuz i always do it would be more i a babied it. but i was prolly missin some extra horse power

[fulloutpwr]

What kind of symptoms brought you guys to look at this?

[CSIPSD]

Look here behind the turbo... Higher EGT's, lower boost, more smoke...

Attached Images

	Leaking up pipe paint.JPG (40.4 KB, 30 views)
	leaking up pipes again paint.JPG (46.5 KB, 25 views)

[MrJohnWayne]

They are a PITA!! to change. If you have someone to help it will be easier though. I did mine by myself and took me about 4 hours minus the 2 trips to get parts cause my y adapter needed to be replaced and ford sold me the wrong one the first time. They have two different bolt sizes on the flanges so if you need to replace it make sure to take it with you and compare.

[ProStarPony]

you can replace the up tubes and the donut gaskets and be fine. I would DEFENITELY have some Lock Lube handy to get the bolts loose... The difference in the flanges are for the 99 year was split. The early 99 usually take the smaller bolt diameter split, if you own a 99.5 and newer, get the bigger one.

Symptoms- Lack of power, exhaust odor, exhaust noise from rear of engine at idle(bad leak) or on accell (normal leak), excessive black smoke...varies.

[red73psd]

i new mine was bad cuz my boost was low. but i didnt no it was that untill i was checkin to see if had any leaks and i saw the black soot on my up pipes