Builds Big Red Toy (2 Viewers)

[GLTHFJ60]

The injector bodies are matched to the pump (pop pressure), then whatever nozzle you want goes on the end. Swapping nozzles is perfectly acceptable, assuming he verifies pop pressure after the swap.

To know what nozzles to put in, you've got to know what nozzles you have. 300hp rated marine injectors isn't specific enough for me to know what you have in there now.

 

[boots4]

So the P pump injectors pop at a higher pressure than my VE injectors so my experience is all based on VE stuff with pop pressures ranging from 245-250 bar. For me, I have tried 5x.012 SAC, 5x.012 VCO, and a 5x.014 SAC. For an all-rounder spending a lot of time on the street the 5x.014 were too big and I could not clean them up enough for my liking even with the compounds. I would not recommend anything larger than a 5x.012 for street-ability. If you want it clean then 5x0.012s may be too big for you too. As for the difference between SAC and VCO nozzle styles I haven't really seen huge differences between the two in my VE system. I switch back and forth between my two sets every so often and think I see gains with each style when I switch. I think tuning can play a bigger role (I'm always trying new settings) so whatever nozzle style is recommended for your P pump try that out. For sure getting the right spray angle will help keep things cleaner. That all depends on what angle your pistons are set up for, 145 or 155 degree.

Yes, you can just replace the nozzles on your injector bodies but you will need to get the pop pressures tested and reset to your P pump if they are out of spec. Injectors that are not popping at a similar pressure together makes for tricky tuning.


On a side note @GLTHFJ60 , I'd like to see you run your stock injectors with the compounds first so we can get an idea what that is like.

 

[Mr Cimarron]

I have some 180hp auto injectors that I think I am going to save rather than send them back as cores. They tested fine last week when I took them in to get rebuilt. They couldn’t rebuild them to my specs for some reason so I just bought new ones.
You can give them a go if you want.

 

[The Phoenician]

Thanks for your responses. I might try out the 5X0.12s VCOs.From everything I've read, (which isn't much) Is the marine injectors I currently have are likely spraying outside the bowl and I need a narrower spray angle like 145*.

My intentions are I want it cleaner than it is now but to also have enough power on tap. @Mr Cimarron I might give yours a try as well.

 

[Mr Cimarron]

@Dirty Koala i believe uses those

 

[The Phoenician]

@Dirty Koala i believe uses those

Which ones, the 5x0.12 or the ones you have?

 

[Mr Cimarron]

Which ones, the 5x.
0.12 or the ones you have?

Believe he is running the .12.

 

[The Phoenician]

I guess it's time to upload some of the pictures from the Toyota Jamboree. It rained heavily for 80% of the time we were there. But was cloudless and sunny on the last day when we headed back.

 

[The Phoenician]

A few more.

 

[The Phoenician]

So I broke my heel on a trail and it took roughly two hours to get from the trail to the ER. Was a memorable time and I'm glad my friends were there to help me out. Surgery next week.

Lee reattaching my sway bad and the extensions we made cause one side broke off.

This is the first time I break and Big Red is driveable. Had to tow it home because I couldn't step on the clutch.

 

[Dirty Koala]

Thanks for your responses. I might try out the 5X0.12s VCOs.From everything I've read, (which isn't much) Is the marine injectors I currently have are likely spraying outside the bowl and I need a narrower spray angle like 145*.

My intentions are I want it cleaner than it is now but to also have enough power on tap. @Mr Cimarron I might give yours a try as well.

@Dirty Koala i believe uses those

Which ones, the 5x0.12 or the ones you have?

Believe he is running the .12.

What pistons are you running? Or more importantly, what’s spray pattern are those pistons designed for?

I have Mahle 286210 pistons that have a 155 degree bowl. I have been running Bosch 4x13 155 degree injectors, but they gaze at idle more than I like...they are known for this.

I have a new set of 5x12 145 degree vco’s that just pop tested at 280 bar. Those will be going back in my motor after the rebuild. Those should clean up the haze despite being a higher flow overall injector.

You can run a narrower spray injector in a wider bowl, but not the other way around. Even with a 155 on 155, you might be spraying a little outside the bowl.

 

[The Phoenician]

What pistons are you running? Or more importantly, what’s spray pattern are those pistons designed for?

I have Mahle 286210 pistons that have a 155 degree bowl. I have been running Bosch 4x13 155 degree injectors, but they gaze at idle more than I like...they are known for this.

I have a new set of 5x12 145 degree vco’s that just pop tested at 280 bar. Those will be going back in my motor after the rebuild. Those should clean up the haze despite being a higher flow overall injector.

You can run a narrower spray injector in a wider bowl, but not the other way around. Even with a 155 on 155, you might be spraying a little outside the bowl.

Not sure what pistons I'm running. It's whatever Cummins put in during the rebuild. I'll see if I can find it on quickserve. Thanks for the info.

EDIT: just looked it up, my pistons are Cummins 3926632 and original injectors are

3802547-PX

Trying to find their specs now.

 

[Mr Cimarron]

So I broke my heel on a trail and it took roughly two hours to get from the trail to the ER. Was a memorable time and I'm glad my friends were there to help me out. Surgery next week.

Lee reattaching my sway bad and the extensions we made cause one side broke off.
View attachment 2666282View attachment 2666284View attachment 2666286View attachment 2666287View attachment 2666288View attachment 2666289

This is the first time I break and Big Red is driveable. Had to tow it home because I couldn't step on the clutch.

Ouch. How do you break a heel?

 

[The Phoenician]

Ouch. How do you break a heel?

You gotta be really strong.....or have a really weak heel....or slide off a 40ft cliff and land all your weight on it. I think it's a combo of the last two options.

 

[davegonz]

Damn dude. Hope you heal up fast.

 

[GLTHFJ60]

Damn man, to a quick recovery.

 

[meatloaf]

Sorry to hear Mike!

 

[Dirty Koala]

Not sure what pistons I'm running. It's whatever Cummins put in during the rebuild. I'll see if I can find it on quickserve. Thanks for the info.

EDIT: just looked it up, my pistons are Cummins 3926632 and original injectors are

3802547-PX

Trying to find their specs now.

I wasn’t able to find much about those pistons or injectors. Key factors to know for both are the spray patterns (145, 155,148 degrees etc.), the number of holes in the nozzle (4, 5, 7), and the size of those holes in thousandths (9,10,11,12,13 etc).

For reference, my 4x.13 Bosch injectors are called ‘300hp injectors’, but that’s just marketing garbage. The part number for those injectors is 0432133864.

I took a few pics of the nozzle to show you the hole pattern on these 4x.13’s.

 

[The Phoenician]

I wasn’t able to find much about those pistons or injectors. Key factors to know for both are the spray patterns (145, 155,148 degrees etc.), the number of holes in the nozzle (4, 5, 7), and the size of those holes in thousandths (9,10,11,12,13 etc).

For reference, my 4x.13 Bosch injectors are called ‘300hp injectors’, but that’s just marketing garbage. The part number for those injectors is 0432133864.

I took a few pics of the nozzle to show you the hole pattern on these 4x.13’s.
View attachment 2666843View attachment 2666844View attachment 2666845View attachment 2666846

View attachment 2666842

Thanks for posting these. We may have similar injectors as mine are 300hp marine ones. I couldn't find much on quickserve to help me figure out the pray pattern and so on. I'll keep searching.

 

[Dirty Koala]

Are they still in the motor, or have you removed them? If you have them pulled, you could at least see how many holes the nozzle has.