I got a turbo off a buddy that he had on his tractor. he said its a 07 powerstroke....it's a twin scroll, theres nothin stamped on it just a/r 1.10. its for my b20 it was only 125 bucks but its like new. its idle at 5psi on the tractor. must turbos i've seen are .68-75a/r. this is my first turbo build so i just want to make sure. thanks

 

See my signature. Simply having a divided housing does not make the turbo a "twin scroll". It is not one in the same.

In order to find out if the turbo Can work (which i doubt), you need to measure the wheels of the turbo. Chances are this is not going to work with such a small displacement engine.

Time to get something else.

 

Tractor and Honda....generally not one in the same. Without knowing much about this turbo, i'm just going to assume its far too large for your goals and setup. Measure the wheels like TheShodan said and that will give us a better idea of what you're working with.

 

Diesels usually use a much larger turbine than the compressor, when compaired to gasoline engines. They basicly run WOT at all times - throttle is how much/little fuel get injected. Tractor motors are usually 'worse' in that sense, since they are used either full-throttle or idle, rarely for accelleration purposes.

The only diesel turbos that have worked well are certain Holset models, but even those are fairly big.

 

OP, when I read the first sentence in your post, I spat Coke all over my keyboard! It just caught me by surprise...Honda...and tractor...

Post up some pics, and take some measurements of the turbine exducer and compressor inducer.


Fixed (thumbup)

 

SCrew it!!, slap it on there, if its too big just put a 100Shot on it to get it spooled up ;P

 

I was just playing, by the way..

 

I still haven't had a clear answer to what makes it a twin scroll turbo... I always thought as long as the manifold is paired correctly with a divided turbine housing, it makes it a twin scroll? Is there an obvious difference that you can see physically on the turbine housing?

 

x2

 

from wiki

Twin scroll turbine housing. The TST housing derives its name from the geometry of the exhaust gas inlet into the turbine. Two different-sized scrolls are generally used, a primary and a secondary. Typically, the primary is open for low-speed operation, and both for high-speed use. This creates the ability of the TST to be a small A/R housing at low speeds and a large A/R at higher speeds.

TST designs are of merit in that they offer a better combination of low-speed response and high-end power. It would be difficult to configure the unit to control boost by effectively varying A/R. A wastegate is therefore still necessary to control boost pressure. Simplicity of the twin scroll turbine housing is its big selling point.

 

ok i got some info from a friend. it has a .84a/r on the exhaust side and 1.10 on the intake. he said it would work but wouldn't spool tell bout 4500rpms. he also said that if i could find a smaller hot side it should help out alot. there is a guy that had a bigger turbo on his STI that ran rather well. i figure with head work and some cams it might work. plus i plan on goin to b20 vtec in the future. thanks

 

The best way for us to understand what you have is for you to measure the compressor and turbine wheels. Just basing it on what your friend says isn't exactly the most reliable method. Also, just because someone ran something larger on a Subaru (which isn't a great comparison), doesn't mean that you can run something overly large on your Honda and have the same result. Not to mention the subaru has more displacement and completely different flow characteristics...

 

I'm currently running a garrett turbo off a mercedes diesel application with is a larger .82 hotside with what looks and measures to be a stage 5 turbine wheel and its matted to a 60mm inducer with a 97mm exducer and it works just fine

BUT generally anything off a tractor is massive wheels with prett small compressors and very larger turbine housings which means a no go on a small displacment engine. even if you did get it to spool up the small compressor isnt going to flow much cfm which means not much power output.

 

ok can we forget that it was off a tractor...its off a 07 ford powerstoke diesel. the tractor was a pulling tractor for fun. the turbo was too small for the tractor, so i got for cheap. i'll get some better info and report back. the first turbo i had was a 14b off a eclispe...everyone one told me it was way too small even tho it came off a 2.0:S. this is my first turbo build. if i blow it to pieces so what i'm just having fun.

 

I know who wrote that and submitted it to Wiki. It's a very good description, but what it didn't say was that the turbine housing has to match with the manifold in order to get the true benefit of such a design. One channel in the volute of the turbine housing is actually smaller than the other. Just remember, A divided housing is a necessity to a turbo to be a "twin scroll", but not a sufficiency.

Twin scroll setups really work on the smaller turbocharger setups moreso than the larger ones due to the purpose of their design. It's become such catch phrase for those that are looking to sell a divided turbine housing be it from a variety of companies that think it simply means divided housing. So far only Mitsubishi Heavy Industries has perfected the design, but IHI has their version that is coming out as well. It is their simplified solution to the CVT and other variable vein turbochargers that were / are introduced into the market without the horrible cost that is associated with the CVT/Variable vein designs.

 

[img]https://viewmorepics.myspace.com/index.cfm?fuseaction=viewImage&friendID=105280498& albumID=2279382&imageID=34235543[img]

heres a pic...if i submitted it correctly
[img]<a href="http://viewmorepics.myspace.com/index.cfm?fuseaction=viewImage&friendID=105280498& albumID=2279382&imageID=34235543"><img src="http://hotlink.myspacecdn.com/images02/47/6e11a0044a754bfe896126712916ff7a/m.jpg" alt="" /></a>[img]

 

HERE YA GO:





Good luck getting a mani made for that thing!

 

you have alot to learn

 

that thing is HUGE

 

That looks like a pre 04 7.3L powerstroke turbo considering I dont see the actuator for the VGT and it has a divided inlet. In 04 ford switched to a 6.0 which has a VGT turbo with a single inlet. I used to work on them diesels years ago and I dont miss it either lol. Either way that is a large turbo.

 

thanks for fixing the pic.... ok so what do i have to do to get this to work? i mean bigger bore port and polish and some cams? i got some money but didn't want to spend a ton on my first try. i'm finishing up a 12to1 lsvtec. I'm just a n/a guy but have away wanted a turbo car so i got my crx back out. I have seen single cams runnnig gt30's, and bseries run gt35's isn't that the same turbo alot of people run on supra's?

 

Sell the turbo to a Ford Diesel guy. There is nothing you can do reasonably to make that fit within a budget of any kind, really. You can Cam and polish 'till you're blue in the face. Won't work for ya still.

 

I"m going to go home and "cam and polish 'til i'm blue in the face" now Mac. Thanks for the sweet quote I started laughing at that in my lab for some reason...proves i wasn't paying attention

 

Too bad you didn't get to the second sentence which said " it was only 125 bucks but its like new" which is very typical noob Honda builder.

Honda built a bulletproof reliable car with racing inspired technology....then American's added ebay and cheap parts to turn them into vehicles hardly more reliable than a new Cobalt.

 

hold up.....i'm not a noob honda builder. i just never had the need to build a turboed honda. ya i'm new to turbos but not hondas u should see my car befor u make statements like that. i've been workin on hondas since i was 15. i've alway thought turbos were cheating, same with supercharges and nitrous. in my town if a four banger can't beat a muscle car motor to motor u have no place at the track. but turbos make way more power and i wanted a fun project. anyway i didn't get on here to make enemies, so i just need to find a smaller turbo.