gathering turbo information.

[Toolman]

Can you link me to Toolman's post that you're referring to?

http://www.shoforum.com/showthread.php?p=815304#post815304

The compressor map really only matches efficiency with a PR and flow level, and tell you when you'll see damaging surge or overspeed. The turbine wheel and housing really are just as important to matching a turbo to an engine and you can't get any info on that from a compressor map.

Yes, I agree, as you will notice in the above noted thread.

I've never run a Holset on any of my personal cars, but I have seen firsthand the impressive results some are having with them. Take it or leave it, my post above was only for consideration, not to be taken as gospel. I'll now graciously concede to the members here that have extensive SHO specific experience.

I am sure that some users have had great experiences with sourcing turbo's from junkyard diesels. The reason some on this site have heard me suggest against this practice is not because there are no diesel turbo's that will work for a SHO, but simply because many on the internet simply find an old 1-ton truck and think that because it had a turbo and made 'mad torque', that it will be perfect for their wants. As the referenced thread brings out, it pays to educate oneself to a decently thorough degree concerning turbocharger choice, and what kind of duty they want their SHO to serve. In the end, since turbocharger selection can have a large outcome on the enjoyment of your project, and since the supporting mods can end up costing well into the thousands (forged pistons, large injectors, tuning device, piping, WG, oil and vac lines, boost controller, intercooler, MAF, plus all the other items that need to be addressed on most SHOs - 60k maintenance, susp, brakes, etc), selecting a turbocharger based on it's cheap price and availability in your nearest salvage, well, that may not always be the best route.

But as evidenced by some of the turbo SHO's on this site (I believe we are up to around 11or 12), a diesel sourced turbo can make loads of HP, and bring a great amount of enjoyment. That said, my current turbo is a brand new unit picked specifically for my powerplant, and if your needs dictate and your budget allows, that route is the one I usually reccomend.

Welcome to the site! I am far from a turbo expert, or even a SHO expert, but having put a few miles on mine, I was forced to educate myself somewhat, and I simply try to share what I have learned with others on the forum. We can always use people with knowledge and experience, and I am sure we can learn some things from yours. BTW, what brings you to the forum? Planning a turbo SHO build?

 

[Toolman]

Oh, and as regards the 190, at the boost level you plan on running, you will be more than fine. Mine has lasted for many years (probably close to a decade by now), and twice the boost level, easily supporting 400+whp. If you already have one, I would not hesitate to use it. If you have not purchased it yet, a 255 is not much more (if any), and will easily support way more hp than your trans will take (heck though, a 95lph can do that!!).

 

[SuperchargedSHOguy]

No one says you cannot make power with a diesel turbocharger...Its all about effienciency, when you start making boost and when the boost falls out as well as many other fine details. It is easy to go to the junkyard or even ebay and purchase a diesel turbocharger, like one of the many Holsets, slap it on and make power. Like someone posted a few up, there are quite a few ones out there and the odds of someone just picking up one without doing any research will not turn out near what it could when you could do alittle research and go with something designed to work for a high revving 3.0 or 3.2 engine.

Toolmans turbo how to thread:
http://www.shoforum.com/showthread.php?t=81944

 

[SuperchargedSHOguy]

Man, I've been out of the DSM stuff for too long...they are now running Holset turbos? Is this is a cheaper alternative than a 16g? Fun little cars, had more fun with the FWD ones as opposed to the AWD ones.

 

[SHOtime2511]

ive already got my turbo.
its a T4 Turbonetics 60-1,it might ba a ball bearing unit from what others have told me but im not sure how to tell.And from what i can tell based on what i know about compressor maps it should be just right for a good flowing/high revving 3.2.

about the E-85:id love to be able to run that but like Chris said i cant think of one station local that sells it.
i see tons a flex fuel cars and trucks running around but for some reason E85 just hasn't made its way down here yet.

 

[delta448]

Welcome to the site!

Thanks, I rather like it here so far.

BTW, what brings you to the forum? Planning a turbo SHO build?

Possibly going that route, but further down the road. Right now I'm just trying to diagnose and fix a few small issues with the 94 ATX I picked up last week, but we all know how that goes -I'm sure I'll be modding soon enough.

Man, I've been out of the DSM stuff for too long...they are now running Holset turbos? Is this is a cheaper alternative than a 16g? Fun little cars, had more fun with the FWD ones as opposed to the AWD ones.

For the performance level, buying and rebuilding a Holset makes the most sense to a lot of DSM guys. The 16Gs are great for the street and daily use, but when you get more serious about performance on a budget Borg Warner and Holset turbos are the consensus best choices.


I had a nice black 97 Talon TSi AWD until early July when a drunk SUV driver plowed my passenger side and sent my 3 year old son and I straight into a utility pole. We walked away unscathed but the car was a pile of scrap.

Edit: First picture is about a month or two before the wreck.

 

[Sho Amo]

and you gotta be a member...

 

[SHO_DOODmorrris]

im running a holset hx35w and its freekin awsome... spools before 3 grand and full boost by 3500 (16 psi) and never runs out of gas!

 

[38SHO]

about the E-85:id love to be able to run that but like Chris said i cant think of one station local that sells it.

i've never seen a station in Palm beach county that has it either....

 

[delta448]

Not trying to venture too far off topic here but,

DOODmorrris, Do you know which turbine housing is on your HX35? Also, how many blades does the compressor have, is it the 7 or 8 blade HX35?

Spool-up seems alright, but maybe a little slow, for the most common 12cm^2 stock HX35 housing on your 3L.

How did you route the exhaust into the turbine, did you use a divided collector ****** to mate to the housing, or did you weld a single pipe onto a T3 ******? I'm not sure what the easiest or best solution is for placement and routing exhaust on a turbo SHO, but I can tell you this: if there is a true division between the exhaust pulses entering each of the halves of the turbine housing, you'll see great improvement in spool speed. Although with only a very very minor penalty in max flow (a loss similar to reversing the gains of minor exhaust housing porting), -which most people never reach anyways. The optimum solution obviously would divide the cylinder banks each into their own half of the divided turbine housing.

Edit: removed link in my last post

 

[SHOtime2511]

so im looking to get some Tweecer help.
anyone willing to give me a hand getting started and getting a decent tune once the car is running on the turbo id be willing to compensate you

 

[SHO_DOODmorrris]

Not trying to venture too far off topic here but,

DOODmorrris, Do you know which turbine housing is on your HX35? Also, how many blades does the compressor have, is it the 7 or 8 blade HX35?

Spool-up seems alright, but maybe a little slow, for the most common 12cm^2 stock HX35 housing on your 3L.

How did you route the exhaust into the turbine, did you use a divided collector ****** to mate to the housing, or did you weld a single pipe onto a T3 ******? I'm not sure what the easiest or best solution is for placement and routing exhaust on a turbo SHO, but I can tell you this: if there is a true division between the exhaust pulses entering each of the halves of the turbine housing, you'll see great improvement in spool speed. Although with only a very very minor penalty in max flow (a loss similar to reversing the gains of minor exhaust housing porting), -which most people never reach anyways. The optimum solution obviously would divide the cylinder banks each into their own half of the divided turbine housing.

Edit: removed link in my last post

hey, yeah i took both banks on a y pipe up to the turbo (2 inch coming from the rear manifold and where the second one gets picked up, 2.5" up to the divided t3 ******. im sure it would be better but its fine for now

ask that C6 corvette i left in the dust on the highway yesterday

 

[SuperchargedSHOguy]

Brian, bring your car down here if you need the twEECer help. Jeremie tuned the turbo 89 and am sure he can get you going...

 

[SHOtime2511]

Brian, bring your car down here if you need the twEECer help. Jeremie tuned the turbo 89 and am sure he can get you going...

sounds like a plan,LMK when you guys are available.

 

[SuperchargedSHOguy]

sounds like a plan,LMK when you guys are available.

Available after 4pm or weekends, same routine.

 

[SHOtime2511]

Available after 4pm or weekends, same routine.

you guys want to start messing with it now or wait till its turbo'd?
from what i understand its best to get basic understanding while the car is still up and running. i could leave it with you,Jason and jeremy to play around with on yours and Jasons car if you guys want?

 

[SuperchargedSHOguy]

you guys want to start messing with it now or wait till its turbo'd?
from what i understand its best to get basic understanding while the car is still up and running. i could leave it with you,Jason and jeremy to play around with on yours and Jasons car if you guys want?

Bring the car down with it and we'll take your car out and play with it. No reason to wait. I think I still have a crap load of twEECer files I got for my 91 that we can play with and you should have downloaded the stock x2j file by now...

 

[SHOtime2511]

Bring the car down with it and we'll take your car out and play with it. No reason to wait. I think I still have a crap load of twEECer files I got for my 91 that we can play with and you should have downloaded the stock x2j file by now...

yeah,ive got Josh's newest X2J file from a few months back.

 

[94BCSHO]

not to get off topic but delta about your commnet on running E85. I just finished up an Automotive Service Techicians course and the last couse we did was emerging technology. We learned one of the drawbacks of E85is that you need a special Flex Fuel vehicle. This is because you can run over 10% ethanol in a conventional ICE because its corrosive. I was just wondering if you guys have been having any problems with running it in the DSMs

 

[delta448]

I'm not sure I understand your post very well, and I don't want to ruin SHOtime's thread so if this reply doesn't answer your question maybe we should start a new thread.

From my understanding, alcohol is a bit more corrosive to rubber based parts, and actually dissolves some sediment deposits in the fuel system (It's recommended to change your fuel filter a couple of times within the first 1000 miles after switching to alcohol fuels). The primary concern in the DSM world was what effect the alcohol would have on FPR diaphragms and the short lengths inside the engine bay of non-hardline fuel supply and return lines. I've not heard of anyone having an issue as of yet. Most of those guys running e85 have an aftermarket AFPR that is compatible with alcohol and have upgraded their short length of rubber lines with some good aftermarket line.

I've never heard that ethanol is corrosive to aluminum or steel though, and I doubt that the problems you'd face would ever go beyond the fuel system, if even that was a problem. It certainly works well for many forced induction import engines tuned for high specific output. Water injection was once considered too corrosive as well and that's been in use since the second world war with great results.