I'm sort of new at this but thought I had a basic understanding. I contacted, by email, Livernois the other day about their turbo kit for 4.8-6.0L GM trucks. They told me that their kit is not for towing. So I wrote back and asked why that was when STS is for towing and so is whipple, or I should say can be used for towing. Both types of charging put more stress on the engine, but if dialed in right should be fine. I explained how I understood that the added pressure on the engine would hurt it, but if kept reasonable what the problem would be. So they wrote back saying the turbo would get too hot and melt down because of the constant load on the turbo and having to much back pressure. I thought most turbos were the same as far as being built for diesel & gas motors? My 6.5 turbo never burns up and it has a decent load on it many of the times and so do many other trucks. I don't think the turbo on my truck is any heavier then one used on a gas engine. What gives? They said they don't know why STS would say it could be used for towing. If someone could please explain the logic here I would appreciate it. Thanks.

 

Not sure I am in the process of finishing my truck, and I definitly plan on useing it for towing.. That why you have a truck to tow crap around... I could not see how being under a load on flat ground would change anything ( towing weight with in reason). My 6.0 pulls a car with a tag trailer, and the cruise rpm is a little different but nothing freaky... Now going up a hill, or pulling a dozer around then sure its going to get hot, but keep you eye on egt, O2, knock for awhile and I say should be fine.

 

One thing to note here is that the STS system is a remote mount, so there is FAR less heat in the exhaust system by that point than with a traditional style turbo right on the header. I feel that the STS would live just fine under towing conditions, even a fairly heavy tow if kept an eye on, but the traditional style would most likely have problems holding up in heavy load conditions for long periods of time.

-Bryan

 

Do what?? Do you have any clue about turbos?? By your claim the millions of $$ in research by the car compaines is worthless. I guess I need to tell all my turbo diesel customers to move their turbos to the back.


Zek, yes you can run the turbo system up front no problem. Just like with any turbo system, watch the timing and your EGT's. As for to much backpressure, if the turbo is properly sized you won't have any issues. I guess many people and companies can sell turbos and kits, but very few really understand what they are selling, much less test them. My advice, buy the Livernois kit, you'll be happy. Run a Turbo blanket on the turbine and your done. You'll have quick spool, unlike remote mount, which will increase your torque #'s and give you better throttle response under towing loads.

 

Do turbos on diesels run that much cooler than on gas engines? I would think that keeping the EGT in line is the key. they probably say that for a healthy dose of CYA.

 

Thanks for all your repleys. I guess it is safe to say that running a turbo would be fine, just keeping an eye on the egt. I still don't know why someone marketing a product would say it would get to hot if it was set up right. Maybe they don't want liability. As far as diesels go I thought they ran hotter because of the increased combustion pressures and the higher BTU's of diesel itself, I could be wrong. Does anyone else have commets to add, I like getting all the info i can before I get something for my Dad's truck and blow it up. It comes down between a whipple and Livernois kit. Towing is 30% of the time and the rest is mostly highway. Fuel efficiency is key. My dad puts on 40,000 + miles a year. This is with a 2005 5.3 Z71 with crew cab and 4.10s.

Thanks guys.

 

It might be said depending on what they have near the turbo. Plastic parts... Under street and mild race the heat build up might not get hot enough to start melting those parts. But thats what covers, blacnket and sheilds are for....
Ricky

 

Diesels run similar EGT's at high peak loads, this mainly due to the huge cylinder pressure (ala 40psi or more in a performance/towing app.) and the BTU/slower burning fuel as well. Just running around town and cruising though Petro EGT is higher. As for melting stuff, just run a blanket and proper A/R ratio. Just running the wrong A/R will hike the EGT's up 200-250 degrees. And putting a blanket on the exhaust turbine housing will cut around 200 degrees.

Here is a video illustrating heat under load....

Turbo engine on stand(right click and save as)

Jose

 

 

BTW, that is Ford's XR6T Inline 6 which is the domestic answer to the 2JZ. Sucks we can't get them here YET. 4.0L, DOHC....yummy. Also look for a GM Inline 6 out of the trailblazer to be putting down some serious #'s soon as well.

JZ

 

I thought it was a diesel, until I read 6700 rpm.

 

No...its a petro motor.

 

I have a Silverado SS with my own turbo kit on it. When I tried towing my 24 foot enclosed trailer with it, it did it.
That said we also recomend you don't tow with our kit also. I had high underhood temps and the water temp was going to high also.
My engine in 4th gear locked up kept creeping into boost on even small inclines. This caused the timing to drop to ward off knock and the af was going 11.5-12-1 causing high temps.
Livernoise probably knows there product very well, listen to them and you will do well.

I would use the blower if towing with a gas engine is your goal. Of course I would use our blower kit!!


Good luck with your truck

Kurt

 

Their is absolutely no reason why you can not run a turbo setup for towing...lol. Well first, high underhood temps under load means its time to wrap some exhaust parts....lol. Next if your water temps are rising, that means its time to wrap some exhaust parts...lol, and their maybe some detontation going on. Heck we run turbocharged SBC's in marine applications (ala off shore power boats and Ski boats) which runs under HUGE load on water for LONG periods of time due to the incredible drag created by the water. iThis is in engine compartments that are smaller and more tightly cramped than our cars. No reason why you can't run it....just be smart with it and wrap important parts...lol.

Jose

 

Jose,
what is ford putting those motors in? that looks to be alot more compact than the inline GM engine isnt it?

Are ford and gm going to be making some boosted inline motors? that would be awsome in the new camaro, if they did a inline turbo motor, maybe it cold be the next supra, lol

 

Well broh unfortunately the Ford motor will not make it to our shores its only outside the U.S. We are working on trying to acquire an XR6 engine for testing. As for GM, well unfortunately they aren't building squat, we are actually working with a customer on boosting a trailblazer I6. Both motors look extremely promising to make in excess of 1200hp with some tweaks and proper parts. The Ford motor comes in a Sedan called the XR6T.

Jose

 

ah a sedan, I didnt know if it was acutally designed to taket he 2jz, that what I thought you were saying so i was thinking maybe it would be in a sports car of some sort

will it not pass emmissions, is that the reason it wont make it to our shores?

 

Yeah emissions here is strict....., but it is one bad engine for sure....

4.0L DOHC
8.7CR if I remember correctly
GT40 turbo from factory
ATC cams..and other goodies.



Jose

 

Plus I believe the car won't meet our safety crash standards.

 

Id bet that motor put into a mustang could convert a few of us from F-bodies