dodgediesel

That sounds right. When I max out my fuel, that sucker spools right now!!!!!

clutch1

i agree they're definatly a performance turbo but hes got plenty of fuel. i guess in his situation its the elevation.

clutch1

hey dodgediesel whats your elevation since yall have similar trucks?

bridleman

Clutch1 I spoke with Dennis and asked him about this break in period and he said it was little if any do to the testing at the shop.

Todd F, As far as not being a towing turbo well........thats the exact reason I bought this turbo I was told from everyone in the "know" that this is the ultimate towing single and since I'm hooked up to about a average of 8000# 3- 4 days a week hauling horses I would not have bought it if it was a performance turbo first.

I don't know but I have faith in HTT that they'll get this all sorted out with what ever the outcome .

I agree with Hohn this has been a great thread with a ton of info and quite honestly I don't mine being one of the guinea pigs just as long as we find a CURE!!

clutch1

man i hope they get you squared away, not fun driving a truck if you cant enjoy it.

clutch1

hey i got an idea, hit it with some nitrous.... nah jk.

dodgediesel

I'm at 2805 feet up here in Alberta, Canada. I run it hard when it's cool. It's about 90 degrees here lately so I've been ***** footing around till it's cooler out... I have a HRVP 44 so that makes a big difference, much hotter egt's...

bridleman

About 3500' feet here and has been 95- 105*f for the past month and I have been tip toeing to!

I actually thought about nitro but I really need this fixed before I go there and I need to study up some on it to.

Todd F

I would love to see a dyno chart of someone that has a 14cm cast exhaust housing then switches the housing for the 13cm stainless on one of HTTs turbos.

I really figured I was in between a Super Stock 62/71/13SS and a HTB2 62/65/14 (or 13SS exhaust) with my M4s and a EZ but these post tell me that the smaller 65mm turbine wheel would be the way to go for me

Ph4tty

64/14 should be slower to spool than your super 62 but control egts better on top. I think you'd be better off going small and cheap like a 62/12 or even a htbg if you want a quick spooling turbo.
They need to make it work with a hx40 downpipe from the factory for our trucks! Boost at idle sounds tempting =P I think Hammer said his stage 3 starts to light at 1100 rpms- outstanding!
The 71 turbine is for competitive trucks. The smaller turbine can cause more backpressure at high boost thus hurting top end power, but offers better manners for towing and daily driving. The bigger wheel can let more heat out while making more boost thus it should be cooler at wot.

As far as the stainless housing goes these are going to be popular for twins since the wastegate can literally double the flow of the cast iron housings thus eliminate the need for an external gate. Or thats what I hear anyways

iforge03

by my experience with my 64/14 i completly understand what clutch1 was saying earlier about the egts staying low on a hard launch, but being uncontrolable from a rolling start. that is exactly what i am going through. after talking with dennis at htt, i am pretty optimistic about changing to the 65mm wheel and the stainless housing. i am going to try getting it sent off to htt tomorrow to get fixed up. when this hot weather hit, it was like a completely different truck, it wont spool and smokes out 4 lanes of traffic just easing into the throttle. im getting tired of people passing my and flipping me off. hopefully the 64/65/13 will be the answer to my prayers

bridleman

iforge03, Amen brother Amen!!! Nothing like getting the peace sign minus the index from all of the tree huggers

hic316

Let me know how the 64/65/13 goes, very curious. Good Luck

Paul Winey

Hope the 24 valvers won't mind a 12 valve chiming in.

I started with a 62/12 but was way too hot with fuel. Upgraded to a 64/14 with what I thought was a 65 exhaust wheel. Ends up it was the 71 wheel. I had similar problems to what has been described. Very hard to spool (even with my fueling) but once it lit, it would almost explode. I had tried several tunings of the AFC/plate but still too hot even on low hills with 1000# in the back. Spent most of my time switching the OD off and on to climb hills/get up to speed. It would clear the smoke on a sled-pull but the temps had climbed off the charts by then. Not a user friendly combination.

Now I'm waiting for a 64/65/13SS. Hopefully the smaller exhaust housing and wheel will spin alot better. UPS says it will arrive tomorrow and I have a pull Sunday. I'll post updates when they come.

Is anyone else with a 12 valve running the 13cmSS housing and if so what compressor size and exhaust wheel size do you have. What combo 64 - 66 compressor side 65 - 71 seems to yield best results for high-performance, non-towing applications. I know too an auto tranny and a big single are not the best combination but twins aren't until our next single is born in January

Paul

iforge03

that is the same turbo im going with. let me know how you like it. it looks like htt may be waiting on parts so mine might not be done for a few weeks yet