High pitch wistle

[Moyerboy]

ok i pulled the truck out of the gagrage yesterday and after i was out and about i started getting the uncanty air leak like a boost tube was bad (looked and couldnt find anything) and after alittle more driving I started geting this real bad wistle (like someone was wistling in my ear) I cant find a leak anywere and cant seem to find an up pipe leaking, any one have an idea what else i could look for?

[gkittredge]

I had the same thing happen on my Cummins. It was a bad gasket between the exhaust manifold and the turbo.

High pitch whistle and the air leak could only be felt if the engine was revving. It got worse under a high boost load or when using the exhaust brake.

[mplacek]

yep i would look around the turbos....get your buddy to give it some throttle and you should be able to see something around the turbos with the hood popped....on my friends you could see a little black smoke come out when it was throttled and also her the whistle....i think if i remember right they have to pull the cab and transmission to get to it

[Moyerboy]

well couldnt find anything around the turbos so went and had it checked and it winds up that the air leak and wistle is coming from my cooling system when the rad cap is blowing off from a over pressure symptom. Guess arp is going to be getting a call time for head studs and gaskets. Thanks guys for the input

[08stroker250]

well couldnt find anything around the turbos so went and had it checked and it winds up that the air leak and wistle is coming from my cooling system when the rad cap is blowing off from a over pressure symptom. Guess arp is going to be getting a call time for head studs and gaskets. Thanks guys for the input

ARP head studs aren't available bud. You will have to go with Elite's studs and OEM gaskets.

[Moyerboy]

I am waiting on arp a rep fro arp said another month and they will be out and then I will be buying and from r&e racing 469.99 from there and gaskets from a local dealer for 475 (for a complete head job no head bolts). Stock wil be back up in buisness hopfully in june.

[08stroker250]

Good luck with ARP.....they have been saying a month for 6 months now.

[Moyerboy]

yeah i know they had a recall on them or somthing the type of metal wasnt strng enough i guess idk just what iv heard from the local shop were im taking my truck for the head job.

[Jesse@MBRP]

I have a friend who works for ARP and I couldn't get my hands on them. I'm kind of glad I went the H11 route now though...nearly 100 extra HP and they are holding strong.