Engine Rebuilding options for S/C

[scottryana]

No Rick I get it, what I am saying is on a FI motor with out any other way of controlling fueling it's a bad thing. At 4000 RPM's it's at 14:1, I would rather a boosted motor be at 10.75:1 than 14:1.

Like I said I think in a NA setup it might be a good change. You might see a little increase in mpg and power, but in an FI setup with no way to tell the computer you need more fuel, extending the time it spends at 14:1 is not really what you want.

 

[landtank]

No Rick I get it, what I am saying is on a FI motor with out any other way of controlling fueling it's a bad thing. At 4000 RPM's it's at 14:1, I would rather a boosted motor be at 10.75:1 than 14:1.

Like I said I think in a NA setup it might be a good change. You might see a little increase in mpg and power, but in an FI setup with no way to tell the computer you need more fuel, extending the time it spends at 14:1 is not really what you want.

Actually in my charts the period entering open loop up to 4500 RPMs the AFR is 12.1:1.

And I've verified that on my truck with my own wide band which wasn't the one ran on the dyno.

I don't think you can take any one chart as gospel for what everyone will see. There is bound to be variances.

I only posted that chart up to clarify what I was talking about and it is applicable to the discussion at hand.

 

[scottryana]

Your truck has a TRD supercharger? Please put up a chart that has what you're actually trying to say than, because I have not seen that in my experience, it would be good to have everyone on the same page to make the best decision?

 

[landtank]

Your truck has a TRD supercharger? Please put up a chart that has what you're actually trying to say than, because I have not seen that in my experience, it would be good to have everyone on the same page to make the best decision?

I'm only advocating that the use of larger injectors is a good idea and have posted more than text to support why I think so. And what I'm planning to do in investigating that idea.

But by all means post up your dyno charts of your SC truck supporting your recommendations.

 

[scottryana]

Edited beating a dead horse Good luck with your idea.

 

[NLXTACY]

Decided to replace the injectors with all new OEM. Decided to do the SC install as long as the most of the top end needs to come off anyway. Should be driving it tonight.

 

[scottryana]

Good move, I think you will have less issues down the road! Just keep any eye out for an intercooler system.

 

[Youngjoonni]

Decided to replace the injectors with all new OEM. Decided to do the SC install as long as the most of the top end needs to come off anyway. Should be driving it tonight.

Good decision! Always nice to get a good baseline before really pushing it. Looking forward to hearing your feedback on your new setup!

 

[NLXTACY]

Down to ONE stupid vacuum hose to figure out. It's pointing down from the intake just behind the new plenum. Anyone?

BTW, I've seen some pics/threads show it plugged and some have a hose going to it.

 

[Youngjoonni]

Pg 15 of the instructions clearly show the port capped off. That port is what I would use to connect a boost guage.

 

[cruiserdan]

Pg 15 of the instructions clearly show the port capped off. That port is what I would use to connect a boost guage.

That port is now a dead end. it was originally interfacing with the throttle body that is no longer there.

It is blind in this application. The port is blocked by the flange of the crossover pipe. You can cap it if you want it to look "clean" but it would be decorative only.

 

[Cruiserdrew]

Be careful with blind caps in Kalifornia. It's waving a red flag for the smog guys during the visual inspection. I'd leave the vac hose in place. If the other end is blocked off, it isn't doing anything anyway.

 

[cruiserdan]

The hose has been re-routed over to the relocated throttle body.

 

[NLXTACY]

Be careful with blind caps in Kalifornia. It's waving a red flag for the smog guys during the visual inspection. I'd leave the vac hose in place. If the other end is blocked off, it isn't doing anything anyway.

Very true. If its no longer functional then I will just throw on a vacuum hose and route it to some hidden location.

 

[NLXTACY]

That port is now a dead end. it was originally interfacing with the throttle body that is no longer there.

It is blind in this application. The port is blocked by the flange of the crossover pipe. You can cap it if you want it to look "clean" but it would be decorative only.

Thanks Dan!

 

[NLXTACY]

http://www.granatellimotorsports.com/

3 AWD Dyno pulls for $199. They are located in Oxnard which is roughly an hour away and they are only M-F. So unless I have a day off coming up, or find a closer AWD Dyno, it will be awhile before I test this.

 

[scottryana]

Wow that's pretty expensive too. When I was doing all those dyno days with the Landtank MAF it was $75 for 3 pulls.

 

[2KCruiser]

Yup, same problem I faced when trying to find an AWD. None around close by and they should only be $75 for 3 pulls like ryan said. Good to see you got it up and running. Saw you driving down the street from my house a couple weeks ago probably before your injector issues. So next time I see you and im in my cruiser, it will be cool to have a granny race.

 

[NLXTACY]

$75!!!

Damn. Hard to find these mythical places.

I'm about to swap tires between the LX and the 60 so 35s will be on here soon. My 1/4 mile time is going to suffer

 

[scottryana]

Yeah $75 is pretty normal here at least. $60 on the mobile dyno if you pull your driveshaft. With the supercharger and 35's you shouldn't be too bad. I am on 35's with stock gears on my truck. If you wouldn't mind once things are all put back together and you have a little breakin mileage would you record a 15-60mph pull so we have the supercharger to compare to stock (14 seconds) rear mount turbo (10-12 seconds can't remember) and a turbo setup like Lilevo's? Thanks!