what tweaks can be done to improve spool

[jmy]

As Torque This pointed out, your Mach4's and ECM should be spooling that turbo pretty good.



Since you say "it just wont provide any air till 10 then it hooks so hard you gota grab something" you could have a map sensor problem causing the ECM to cut back fueling. My 2001 spooled slow until about 10PSI then took off. Turned out to be the MAP sensor was bad, causing the ECM to restrict fuel at low boost.

 

[bmoeller]

You'll get much more bang for the buck to use the pressure, mass and velocity of the compressed air to spin up the turbo's compressor impeller than you will just dumping it into the intake. You want to extract the energy from the compressed air - the fact that, once that is done, the injected air winds up in the intake tract is just icing on the cake.

Doing this would act a little like adding twins, wouldn't it? Sounds like something that needs to be looked into. Should help running a larger single in place of twins. I can spin my 40 pretty good, but need more air towing, to keep EGTs down. Bumping the timing helped a lot, but could still be an issue in the summer.



Been thinking about twins, but like running a paper filter with all of the dirt around here.

 

[rivercat]

Believe me the CaTCHer- By design- most definitly does not restrict fuel at low boost:-laf :-laf :-laf . Back when I had a scanner I could get live data and the map tops at 75" hg=36. ? psi that translates to around 22 if you subtract the 14. ? that is absolute (<--right word?) pressure, what ever the atmospheric pressure constant is at sea level.

Problem is even with the stock hx, I could hit the 75" on the scanner by 10 lbs on my gauge so it might mean my MAP is weak. Im going to try running the comp without the catcher and if it lights better without it I KNOW I have a problem.

With my comp off I can make a cloud of smoke luggin it up to 1800 that rivals the comp on 5x5. I usualy run 3x2 or 1x1 in town for NO smoke around the cops.

 

[rivercat]

Been thinking about twins, but like running a paper filter with all of the dirt around here.

Some one does need to put some time into a full 6 " duct that goes from the bed mounted Peterbuilt style Huge breather to the primary or something equal and do some flow testing

 

[SHobbs]

What about the engine Piers is or was building. Was a 24v with twins and a supercharger, instant boost with a blip of the throttle.

 

[EricBu12]

Rivercat,



I just bought the Hybrid from Industrial Injection..... It is a HX 35/40 with a 14 cm housing and I thought that the spooling would be lagging but I was suprised that it really feels almost stock. There is a boost elbow to adjust the boost but stock is about 40 psi. can't wait to tow with it.

 

[Diesel Power]

What about the engine Piers is or was building. Was a 24v with twins and a supercharger, instant boost with a blip of the throttle.

piers has been really quiet lately..... wonder if he ever got his modded cp3??? :-laf

 

[LNicholson]

another idea

Interesting idea Rusty. Maybe to take it a bit further, instead of using compressed air to spool the turbo-use a stream of N2O instead. That would give added exhaust volume to speed spooling. It would need to be shut off by a hobbs switch once a certain level of boost is reached.

Lon

 

[hdtrukn]

Hey Rusty

Still think a supercharged/ turbo deisel would be sweet.

Just think 8lbs. boost @ idle ?

I can see the need for bigger brakes already.

Scott

 

[rivercat]

Rivercat,

I just bought the Hybrid from Industrial Injection..... It is a HX 35/40 with a 14 cm housing and I thought that the spooling would be lagging but I was suprised that it really feels almost stock. There is a boost elbow to adjust the boost but stock is about 40 psi. can't wait to tow with it.

now add some moderate 1. 5- 1. 6 or 2. 0 sticks and you will really grin !

 

[Forrest Nearing]

good advice... 1. 5yrs later?

 

[AABEN]

You can go with a BANKS Work and Tow PowerPack 1-877-227-5635 fits 94-07 5. 9