My 4d55 performance build

[vanderchevy18]

I forgot to update this but the ones I got work great! I just said the heck with it and used them. Been working great every day for a month now.

Everything so far has been working great. There are still some problems but I'm fixing issues one by one. Its not an over night project for sure! Right now my main complaints are engine noise, an oil leak on the front cover (possibly oil pump shaft packing?), and egts. I'm keeping egts in check but its hard to stay at speed with it. Gearing should probably get rid of both those issues at the same time. I don't really know what to do with the insanely loud engine noise. I don't mean normal old diesel engine noise. This thing is so loud I can't carry on a conversation in the cab going down the road! Its always been like that. Maybe some sound deadener on the valve cover? I don't know. One of these days I'll pull the front apart and find the oil leak. For now its not bad so I'll worry about it later. Any ideas?

[vanderchevy18]

Oh, and where can I find the specs for adjusting lash?

[camoit]

Look in the manual section under 116+ manuals. You can download all the diesel books we have in 1 zip file.

[vanderchevy18]

Tried to download them but it didn't work.

Actually thinking about selling it. Anybody wanna shoot me an offer?

[cdalejef]

tried to download them but it didn't work.

Actually thinking about selling it. Anybody wanna shoot me an offer?

nooooooooo!!!!!!

[camoit]

Tried to download them but it didn't work.

I just checked the link. it works. You may have pop up blockers on for the site. If so them there would be a "security" bar at the top of the browser window. Or right click the link and select save target as....

[vanderchevy18]

I'll try it again. I use my phone for everything so that might be the problem.

If i do sell it, I need to get the head gasket and balance shaft seals replaced first. I've got it all torn down right now. Trying to figure out how to get the driver side balance shaft seal out. How the heck does this shaft gear center up on the shaft? It looks like the thing just wallows around on the shaft! Can someone who knows give me a call? 316.650_106three

[camoit]

Ya the phone is the problem. It's a big file and zipped.
Post a picture of the parts.

[vanderchevy18]

OK. I got the seals out and one replaced. I have to wait till Tuesday for my oil pump/balance shaft seal. This balance shaft gear has to be stripped out. The one on the passenger side has a flat spot on the inside of the gear to mate up with the flat spot on the shaft. The one on the driver side doesn't not. If anyone has an extra, please call me! I'll buy it and pay for next day shipping!

[vanderchevy18]

My computer sucks. All I need to know is the spacing to adjust the lash. It looks like there's 1/8" gap right now.

[camoit]

No information on the sticker under the hood? I want to say .006 and .008 but I'm not sure.

[vanderchevy18]

OK so I got a friend to download the file for me. Everything is back together and ready to fire! Well.... all except that balance shaft seal and sprocket. I need a new driver side sprocket or something. There's no flat spot on the sprocket to slide onto the shaft. Can someone please point me to one? I'm getting desperate here! Lol!

[camoit]

B&R Head and block West Sacramento. http://brheadblock.com/
If they cant get it they can build it.

[vanderchevy18]

I emailed them. Also emailed another place too. We'll see what they think.

[camoit]

I would call them. I don't know what the response on emails are. It's a good shop. I have been in there many times.

[vanderchevy18]

Hallelujah!! I have one coming!! I'm on a facebook group called Kansas Diesel Crew and a guy joined last night that has a couple rangers with the 4d55 and lots of parts!! How freaky is that!?!? Lol!

[camoit]

Now thats funny. At least you found one. I hope you don't dump the truck now. You can always invite them on to our board. Once you get it running make sure the exhaust flows cleanly. Otherwise this happens when you plug them.
Keep an eye on the exhaust ......

[vanderchevy18]

Yeah it was pretty cool to find someone so close. He just bought a ranger with a 4d55 in it a couple days ago that runs great for $350!!! That makes his 4th truck with a 4d55! Lol! If it runs as good as I'm hoping, I will definitely keep it.

That's pretty cool. Lol! I've seen quite a few catastrophic failures being around performance diesels, but none that bad. Lol!

[camoit]

How did you like the way the exhaust blue up like a balloon first. Then it sounds different, and finally the pressure is released. People just don't know that a diesel engine is just a controlled bomb. Why the guy running the camera did not see the movement and hit the e stop who knows. Things should never move on a dyno.
Here is a Detroit that he should have shut down the very second it started hunting. When they hunt it tells you it is on the verge of a runaway. Especially a Detroit. Instead of the shop rag he should have pulled the emergency kill lever on the blower. I have only seen 1 in my life on a cat and it was bad.

[vanderchevy18]

Well I have some amazing news, and some not so good news. Boost went from 15psi under full load and full throttle, to 20psi under 3/4 throttle! Its also whisper quiet now! Egts are a bit lower too. Its peppier too! Finally it stays cooler too. Before it would get too hot too quick. Not a problem anymore! Overall I am super happy with it! Just one tiny little problem. The oil leak didn't go away!!!!!!! Aaaaaahhhhhh!!!!!! I think its the front main seal. That's the only thing i didn't replace. I guess I'll tear the dang thing back down again! Dang it!! Also during the drive it just all of a sudden got a much louder and raspier exhaust note. Not sure why. It wasn't missing or anything. The exhaust just got louder and raspier. Balance shaft? I don't know. It runs great though. The only other problem i had was the rocker arm shaft bolts started backing out. No big deal there cause its common. A little loctite and its fixed. But I'm definitely happy with the rest of it though! It really is a whole new truck!!

[vanderchevy18]

Now to take it back apart and find that stupid oil leak!

[cdalejef]

What kind of EGT's are you pulling?

[vanderchevy18]

Well it used to be 1000-1100 just cruising 60mph. I could hit 1400* on a hard pull. Now I get around 800* cruising and 1250 on a hard pull.

[vanderchevy18]

Well I got the oil leak stopped! Woohoo! It took me all of an hour to pull it apart, put the new crank seal in, and put it back together! The old seal wasn't even bad. It just wasn't pushed in! Seriously! I pulled the gear off and the seal was just sitting on the shaft! It doesn't matter. I'm happy its drive able again!

Egts are high again though. Still tuning the pump. Its just a constant work in progress!

[vanderchevy18]

I've spent more time driving it today. I did some more tuning on it too. Basically I've got the full load screw in as far as it'll go without revving up the motor. I've also got the boost fueling valve shimmed as far as it'll go. I shimmed the timing advance spring a little and I'm building 23psi of boost now. It is running so clean that i cant puff black even if i lug it! Only problem is I can hit 1400* egt pretty quick. I'm thinking I need some more fuel so I can quench it a little but I don't think it has any more fuel to give! Lol! I think I've officially hit a stopping point till I can get some pump work done and the injectors edm'd.