DocG's Official Underhood Cleaning Project

[blackened88lx]

I've never baked it, I just throw it on and rip it. The intake has honestly still never been on, but I've painted a lot of engine parts on my bike with it and never had a problem. Don't get me wrong, I'm not saying your stuff is gonna look terrible because it's not black, I'm just very partial to black haha. Hell I painted my whole busa with the same spray paint! I'm sure the gray will look sick, especially with the polished pieces. Can't wait to see it done.

 

[DocG]

I've never baked it, I just throw it on and rip it. The intake has honestly still never been on, but I've painted a lot of engine parts on my bike with it and never had a problem. Don't get me wrong, I'm not saying your stuff is gonna look terrible because it's not black, I'm just very partial to black haha. Hell I painted my whole busa with the same spray paint! I'm sure the gray will look sick, especially with the polished pieces. Can't wait to see it done.

Gotcha. I was reading on the painting and it just takes way better with it being baked on. So I figured for the price I'm getting some powdercoating done, hopefully it'll last long enough.


I really thought a lot about going black, but considering my car is ALL black....I thought the dark gray would give some contrast but still look cool. Time will tell. I'm happy with my decision. I love dark gray.

And like I've said...my car is not a trailer queen or show car. Its a runner. I just figured since the top end was tore down, for the $100 it seemed worth cleaning up what I could.

 

[strtrcr50]

Oh yeah, with the mods your car has and the fact that it runs funky did ya ever think that mabey you should get an adjustable fuel pressure regulator?

So Laser, when you up the fuel pressure and the car shortens the pulsewidth of the injector to keep the same amount of fuel going in, where are you? Your short term fuel trims will not let you richen up the car that way unless you go past what the eec can compensate for. If you do that to the eec, expect some really nasty surging, etc. Yes, I do have a Kirban AFPR, but only because it was free. I have it set to stock fuel pressure btw. I'm not sure if the factory ones handle boost at a 1:1 ratio either, but that's not a problem for Doc yet.

 

[LaserSVT]

So Laser, when you up the fuel pressure and the car shortens the pulsewidth of the injector to keep the same amount of fuel going in, where are you? Your short term fuel trims will not let you richen up the car that way unless you go past what the eec can compensate for. If you do that to the eec, expect some really nasty surging, etc. Yes, I do have a Kirban AFPR, but only because it was free. I have it set to stock fuel pressure btw. I'm not sure if the factory ones handle boost at a 1:1 ratio either, but that's not a problem for Doc yet.

IDK what to tell you. I dot think the Fox computer cares. It sees the IAT, TPS, MAF and RPM and figures its pulse at the factory set fuel pressure. If you increase the pressure then more fuel come out at that pulse I dont know for sure though. I know on the newer cars you have to adjust from the ECU.
My 92 had bad surging problems with the mods it had. I put on an adjustable regulator, set it to 42 psi and cured the problems

 

[DocG]

Soooo....WTF is the point?


I do have a fuel regulator....and as it sits before I focked with it...it was wide open.

 

[LaserSVT]

Soooo....WTF is the point?


I do have a fuel regulator....and as it sits before I focked with it...it was wide open.

You need a pressure gauge and need to set it to the correct PSI.

 

[LaserSVT]

Drunk ass.

 

[strtrcr50]

IDK what to tell you. I dot think the Fox computer cares. It sees the IAT, TPS, MAF and RPM and figures its pulse at the factory set fuel pressure. If you increase the pressure then more fuel come out at that pulse I dont know for sure though. I know on the newer cars you have to adjust from the ECU.
My 92 had bad surging problems with the mods it had. I put on an adjustable regulator, set it to 42 psi and cured the problems

I do know on this one. Short term fuel trims will negate out what you do with an afpr. Short term fuel trims compare what the eec wants to see at the o2 sensors vs what it does see. If you up the fuel pressure, it will get richer for a short time, the eec will see that, and lean the mixture out. If you go past the 12% range that the eec can compensate for, it will have problems.
I believe you might have fixed an idle problem, but it was a band aid fix. BTW, stock is 40 with the vaccuum off, iirc.

 

[strtrcr50]

Look closer ya newb at the fuel rails....duh.

Looks stock to me.
Laser is right?

 

[LaserSVT]

I do know on this one. Short term fuel trims will negate out what you do with an afpr. Short term fuel trims compare what the eec wants to see at the o2 sensors vs what it does see. If you up the fuel pressure, it will get richer for a short time, the eec will see that, and lean the mixture out. If you go past the 12% range that the eec can compensate for, it will have problems.
I believe you might have fixed an idle problem, but it was a band aid fix. BTW, stock is 40 with the vaccuum off, iirc.

Thanks for the info. I like learning new stuff
With mine i did set it with the vac line off. There is a possibility that the stock regulator was bad. IDK. It had a 255lph pump and 24 lb injectors with a Pro-M MAF set for 24lbs. I just always thought if you swap the injectors and pump in a return style system that you would need to adjust the pressure accordingly

 

[strtrcr50]

Thanks for the info. I like learning new stuff
With mine i did set it with the vac line off. There is a possibility that the stock regulator was bad. IDK. It had a 255lph pump and 24 lb injectors with a Pro-M MAF set for 24lbs. I just always thought if you swap the injectors and pump in a return style system that you would need to adjust the pressure accordingly

You match the injectors to the MAF if you don't have a tweecer/chip. But you did. I wonder about your problem. If there were something else reducing the amount of fuel coming out like clogged injectors, that might have fixed it. I ran a 255 high pressure(gss340) on a stock fuel system and had no issues. It just recirculates more fuel.

 

[LaserSVT]

Its possiable. They were FRPP ones and they had mabey 1500 miles on them. The pump, lines, rail and filter were changed when they were. But its idle would hang and sometimes it would try and stall. I replaced the IAC and made sure there was no vaccume leaks and couldnt figure it out. Someone on here suggested to get the adjustable regulator and try 38-45 psi and 42 worked the best. Its throttle responded much better and started up better and the idle issues went away. Sold the car a few months after that.

 

[DocG]

I think maybe i've had too much brew to comprehend.


Is that regulator really a stocker?


FOCK!

 

[LaserSVT]

I think maybe i've had too much brew to comprehend.


Is that regulator really a stocker?


FOCK!

I see no adjustment screw on it

 

[5.0Droptop]

it may be a holley. They look like stock and the adjuster is where the vac line goes.

 

[Chuckman]

it may be a holley. They look like stock and the adjuster is where the vac line goes.

it would be red then, and still junk. had one on mine for all of five minutes before i noticed it squirting fuel out of the adjustment screw and into the vac line. this after having a holley tb that stuck wide open. no more holley crap for me.

 

[strtrcr50]

Its possiable. They were FRPP ones and they had mabey 1500 miles on them. The pump, lines, rail and filter were changed when they were. But its idle would hang and sometimes it would try and stall. I replaced the IAC and made sure there was no vaccume leaks and couldnt figure it out. Someone on here suggested to get the adjustable regulator and try 38-45 psi and 42 worked the best. Its throttle responded much better and started up better and the idle issues went away. Sold the car a few months after that.

Upon further thought, it is also possible that your MAF wasn't 100%(few are.) and the added fuel pressure got the short term trims to line up? Don't know. When I datalog, that's one of the things I watch. Fuel trims vs narrowband o2 vs wideband o2. I guess in that case, you would be correct. At least at idle, an afpr would clear things up. But with a programmable system or a chip, not the right way to fix it.

 

[strtrcr50]

I think maybe i've had too much brew to comprehend.


Is that regulator really a stocker?


FOCK!

This is what I'm used to looking at..

 

[DocG]

Hmmmm.....well it would be a good time to swap a new one I guess. I'll have to look again but I swear it adjusted.

 

[strtrcr50]

Hmmmm.....well it would be a good time to swap a new one I guess. I'll have to look again but I swear it adjusted.

Maybe it does. Where does it adjust? And if you do swap it out, you can't go worng with a Kirban like I have.