I see diesel truck turbos on eBay all the time... and they seem to be a good deal... I used to have one collecting dust on a shelf, til I sold it to a friend, but I was just wondering if some of these would work for a 455... the ford powerstrokes are 7.3L so why wouldn't that same turbo be able to boost a 7.5L (455)? also I do know the A/F ratio for the diesel turbo's isn't right for gas engines... but I'm not sure how this would be changed to work right... o No: If one could be used for a single turbo setup... I think that could be a real ass-kicker, and with some people I know locally, I could probably get away with it cheap... Forgive my turbocharger ignorance, I'm still learning... :laugh:
one thing to keep in mind is that diesels turn an much lower RPM's .. you might run out of turbo, though you're running less boost.. hmmm also, seals (at least on earlier diesel turbos) are/were different from turbos for gasoline engines.. i think that mainly was an issue if you were using a draw-through setup thougho No:
Like he said, they are designed for lower rpm. The exhaust side is big enough, but the compressor side is designed for high pressure, low volume. It wouldn't be have the volume to handle rpm of a gas motor. I have heard of guys using them but generally they are inefficient at best....
Well I've also heard of people using them, changing the cold side for one for a gas motor, with good results. I think the advantage here is that diesel turbo's are often overlooked and can be had for super cheap- I should know, I've got a ford powerstroke stock turbo sitting in my garage I picked up for $100.
well of course, I'd be using a blow-thru setup... just thinking of a cheap way to make boost with my 455...
I have used 2 holset H2D turbo off a cumins turbo diesel I think. They did not have any problems on a Pontiac 455 so I think they would do well on a Buick also. Hope this helps.
how did you set that up? was there any changes to the turbos? If I can find another turbo that matches the unit I already have I might make a budget remote-mounted blow-thru system for my car...
I personaly wouldn't use a turbo disel turbo. Its gonna spool very slowly and can't handle high rpm(7K+). What are you looking for as far as the turbo fast spool or big power. If you want fast spool you can run twin t3/t4 turbos and get boost quickly and make good power for mad cheap. If your looking for straight power more at the topend you should look for something in a .70 + trim but you won't start making boost until around 3K and youll hit full boost at around 6.5K. Theres other ways to make more power with smaller turbos with out turing up the boost to high. You could run a v mount intercooler which will give you very quick spool and a big power increase. Or you can also mount the intercooler upside down making your piping shorter which creates faster spool and more power. Theres alot of great turbos you can get very cheap that can make big power t66, t28, t3/t4, ct26. It really what your building the car for.
well the car is going to be set up for drag racing, but it'll spend most of it's time "playing" on the street... I thought having a rear-mounted setup would be awesome, and if I could track down a second turbo for cheap, I could have a buddy who is into that stuff mess with them a bit, and possibly change the "cold sides" so I can run them for very cheap, without having to fabricate up manifolds or headers for them to fit under the hood. I forget which magazine it was that did a feature on using diesel turbos for cheap power but it was very cool... and very wallet-friendly!
so your looking at running a squire style turbo set up. There actually really nice cause you don't need a intercooler cause the charge gets cooled by air passing over the pipe on the way back to the front of the car. It adds a nice stealth element to the car. The only thing that is bad about those setups is running oil lines back to the turbos. When you first start the car yuor turbos starve for oil. this can be prevented by using a dry sump.
yeah if that's what you call it... I wouldn't mind running the oil lines at all, and I like that type of setup the most because of the stealth effect, and its nice to not have to run an intercooler or fabricate the manifolds... I know starving the turbos for oil is a bad idea, but I would give it the proper warm-up time so they wouldn't see much rpm until the oil is getting to them... I don't know if this would pose a huge problem, but the simpler things are, the better they are IMO lol. I have take out the original gas tank and I plan on using a fuel cell in the trunk, so all that space is left open for something... might as well use it for making more power lol. Is there some type of formula to figure out what type/size turbo I would need? I believe the guy with the TT 455 camaro said he uses twin t3/t4's... which are pretty common, so I think I could pick up a pair of those for a good price... Either way, it's a stock block I'll be using, so I'll only be looking for 6-8 PSI, 8 at most...
twin t3/t4s are a good choice they make good power and are very reliable. How much power are you looking to make from the setup? The smaller the trim the faster the spool the larger the trim the greater the power. If your looking to hit a high amount of hp id say use something around .60 trim and youll still be able to build a streetable amount of boost at low rpm.
Well I don't want it to go over 6000 rpm... 5500 would be nice... I'm not concerned with hitting a certain power level... but I'm sure a twin turbo 455 would be able to make 550-600 hp without trouble, and with a small cam. .60 trim? would that mean 60mm? **sorry I don't know much about turbo's**
:Comp:Wow thats a great link...:TU: thanks...:TU: I was never able to find anything that good in a reasonable search... I mean, I have to spend hours going through advertising junk just to find informative sites... I just added that link to my favorites.
