Quick IP Adjustment Question
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Senior User
Joined: Sep 2009
Posts: 126
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From: So. Cal
Quick IP Adjustment Question
From everything I've learned and been told on the forum, I needed to "turn a few flats" on my IP to increase power (EGT's = 300*-550* max uphill) and my near zero boost issue.
Well - I searched this forum and read up on the subject and yesterday I removed the cover, hand cranked the engine until I saw the allen head screw (first time was not that easy) and was able to turn about 1 flat. Went for a climb (about 85* out) with no real noticeable difference.
After work today - I went to adjust it again and the screw will not move.
So my question - does adjusting the screw clockwise (as you look at the screw thru the access panel) increase fuel? Did I go the wrong way (I hope) or am I maxed out and this is a sign that my pump is going bad?
Thanks in advance...
Well - I searched this forum and read up on the subject and yesterday I removed the cover, hand cranked the engine until I saw the allen head screw (first time was not that easy) and was able to turn about 1 flat. Went for a climb (about 85* out) with no real noticeable difference.
After work today - I went to adjust it again and the screw will not move.
So my question - does adjusting the screw clockwise (as you look at the screw thru the access panel) increase fuel? Did I go the wrong way (I hope) or am I maxed out and this is a sign that my pump is going bad?
Thanks in advance...
Lead Driver
Joined: Dec 2002
Posts: 5,491
Likes: 16
From: Kuna ID
Yes, turning the screw in clockwise increases the fuel. How old is your pump? I have heard several people mention that with old/worn pumps, they had the screw maxxed out and couldn't get any smoke. I'm not saying you want a ton of smoke, but obviously if the screw is maxxed and you get no smoke, something is wrong.
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Senior User
Joined: Sep 2009
Posts: 126
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From: So. Cal
Yes, turning the screw in clockwise increases the fuel. How old is your pump? I have heard several people mention that with old/worn pumps, they had the screw maxxed out and couldn't get any smoke. I'm not saying you want a ton of smoke, but obviously if the screw is maxxed and you get no smoke, something is wrong.
If it is bad - is there a bitchin' aftermarket IP? Should I do larger injectors at the sametime? Would it make a big performance difference or should I just replace the IP with OEM replacement and clean and test my injectors? Can you get remanufactured pumps? Sorry - lots of questions.
I'm actually trying to get more boost. A little smoke would be OK if it gave me more charge-air and kick.
Luckily I have a car and two motorcycles to get me around - but I only live two miles from work...I should be on the bicycle.
Lead Driver
Joined: Dec 2002
Posts: 5,491
Likes: 16
From: Kuna ID
I'm getting my stuff from the guys on oilburners. I'm ordering some new "bb" code injectors from russ(Typ4) this week and when the time comes, I'll be sending my IP to Mel(Agnem) for a baby moose rebuild.
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Senior User
Joined: Sep 2009
Posts: 126
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From: So. Cal
Got home today and tried again - no more clockwise flats left. I can adjust counter-clockwise - but why?
Guess I'm just maxed out and will look into a Moose or Dps injector pump I read starmilt mention on another thread..
Guess I'm just maxed out and will look into a Moose or Dps injector pump I read starmilt mention on another thread..
Senior User
Joined: Sep 2007
Posts: 317
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From: Snohomish, WA
I installed a Hypermax Smoke Puff Limiter to keep my EGT down when lugging up hills in low boost situations.
I had my emissions test last week and I was really nervous going into it. I figured failure was a certainty. Apparently the Hypermax SPL works because I tested at 8% opacity, well below the 40% limit here.
I only say this, because Hypermax recommends tuning your pump on a flow bench when you install the SPL. I couldn't do that, but if you are having the thing rebuilt, it might be something to think about.
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