Wastegate=HDP protection?...

[greyelephant]

Yup....Another friggin newbie thats confused..., Ive read countless threads on drive pressures, bigger turbos, wastegates, headstuds,blown HG's.....UGH! What ive got so far out of the whole thing is that its a great topic to start an argument. lol

So, correct me if I'm wrong.... blown head gaskets come from high drive pressures? If this is true, then a properly set wastegate will protect against HDP? It will bleed off the excess pressure before blowing your HG?
Are turbos not designed to push the same amount of air as they exhaust? Is this where the 1 to 1 ideal drive pressure comes from?

Im certain this is super basic to a seasoned diesel guy...but i appreciate the input. I have an 11' 3500, just hit 14000kms, all the deletes,H&S xrt on 60hp W/tranny tuning GDP intake manifold, 4" afe TBE, afe stage 2 intake, only monitoring the EGT's so far.

I dont drive hard, give er' the odd burp on the skinny once in a while, summer months i pull a 15000lb toyhauler to the lake and back a few times with usually one long trip to the mountains..... Im just looking to run solid with no problems. And in the back of my newbie head, im trying to avoid doing the headstuds by justifying a wastegate. I dunno....

LOVE my truck the way it is....21-22 hand caculated on the highway running dry, a little more passing power, and a little puff of coal when you kick it...I just want to keep it that way without having to tell the boss she cant have purses or shoes by trying to explain why i NEED all this stuff....

I apologize if this has already been covered.......I also have a 3.5 year old driving monster trucks on my head while he scream sings the imagination movers song. tough to concentrate....

THANK YOU!!!

[Rockwerx]

Excessive drive pressures can contribute to a blown head gasket. It is actually high cylinder pressures that blow them. As drive pressure goes up, so does the cylinder pressure...when you are on the throttle...not when you let off.

A big part of the problem is the design of the exhaust manifold and a turbo that is at the end of it's range. So when a guy cranks it up with a tuner it is beyond it's MAP and causing excessive drive pressure situations.

Dump the emission manifold and VGT for something that breaths and you probably do not even need to change the head studs. My new setup is running a lot less drive pressure than the stock setup even at WOT and maximum boost (more boost than the stock turbo...40psi).

I would forget about the 1 to 1 drive ratio theory. After a point, too much boost will blow headgaskets even at a 1 to 1 ratio or less. If you are planning on beating hard on your truck then purchase and install some head studs.

Good luck with your truck!

[greyelephant]

Thanks for the reply....it def shed some new light on the subject....but also raises a couple more questions....GDP wastegate set to stock pressure, running the 60hp tune? Seems like it would help? however, what would you recommend for an exhaust manifold/turbo? thanks again....Kyle

[JessyPayne]

Originally Posted by greyelephant

Thanks for the reply....it def shed some new light on the subject....but also raises a couple more questions....GDP wastegate set to stock pressure, running the 60hp tune? Seems like it would help? however, what would you recommend for an exhaust manifold/turbo? thanks again....Kyle

I've been on here looking for the same answers, and For the Mani/Turbo question, On these trucks the big single does good, I would go with a 66 of some sort and a 3rd gen manifold, such as Steed Speed, PDI, or ect. Some are doing a 2nd gen swap with a 2nd gen mani and the you have to do a different intake and Downpipe setup, Hope this helps a little!

[skirsman]

I guess Steed Speed doesn't make 3rd gen only 2gen setups

[DieselRiot]

Originally Posted by greyelephant

Thanks for the reply....it def shed some new light on the subject....but also raises a couple more questions....GDP wastegate set to stock pressure, running the 60hp tune? Seems like it would help? however, what would you recommend for an exhaust manifold/turbo? thanks again....Kyle

It does help because I have the gate set to 32 pounds of boost and I can make the gate open on the 60 att tune.

[greyelephant]

Thanks guys! I like the idea of the bigger manifold and turbo, possibly at a later date. I am gonna run with the GDP wastegate to get me by. Yeah, i like the odd run at the lights but by no means am i hard on the truck.
Its a daily so im looking for some insurance against drive pressures...which ,to me, the pro-gate covers. Keep in mind, im no engineer, but it just seems to make sense for the money... Worst case scenario....ARP studs and a new gasket!
Cummins mechanic just moved in two doors down....i already shoveled his driveway once this year .....now to wait for GDP to restock the pro gate... Again, thanks! Ill try and keep up on my progress...... And any issues....Guess i better upgrade my membership here!

[DieselRiot]

Progate was def worth it in my eyes. You'll love it. Only thing I recommend is if you are going to tap for boost reference off the back of the horn get a 90 push lock instead of using a straight. Worked great and looks a lot better then using a boost bolt.

[greyelephant]

Thanks! I have to find a Boost gauge, then buy a pyro to match....aaand a new pillar mount that holds two or three gauges....sounds like the DP gauge is a must as well as boost and EGT. UGH! Does it ever end? i kinda hope not...haha

[DieselRiot]

Or you can get a bm or mm and have it all lol.

[2500MegaDiesel]

Towing I blow the wastegate a lot on big uphills when I have the boost set to around 25 psi. XRT on 60.