Timing after turbo install
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Elder User
Joined: Jul 2006
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From: Near the ocean
Timing after turbo install
I installed a Banks Sidewinder and turned the IP up (rich) 2 1/2 clicks. The only time I get any smoke out the exhaust is when I jump on it and the turbo hasn't "spooled up" yet. The engine starts and runs excellent. I also installed new injectors. I never timed it after the install. I average around 12 mpg in the city and around 15-17 on the road empty. If I hook a load onto it, the road mileage drops to 10mpg. I'm wondering if I increase the IP and change the timing will my (1) mileage increase or (2) will I get any more power. My EGT runs about 600-650 at 60 mph.
Appreciate any posts.
Tom
Appreciate any posts.
Tom
Cargo Master
Joined: Feb 2010
Posts: 3,493
Likes: 3
From: NY
I did almost the same exact thing recently, too. Put a banks sidewinder on her, some new injectors and I still haven't had engine timed. I turned up IP 1.5 flats and no black smoke yet. I think you might want to turn fuel down a little because my EGT's are at 450 at about 60mph. I'm just saying, if you run her rich and then tow something, you could really overheat your engine (melt pistons, etc.).
Fleet Owner
Joined: Jul 2006
Posts: 20,373
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From: Mi'kma'ki
"A general rule to follow, and a good starting point for tuning, is that the more fuel you're running, the more conservative the ingnition timing. It all goes back to cylinder pressure. Adding fuel increases the combustion pressure since there is now more gas trying to expand rapidly during the power stroke."
so i would likely try using 7.5 - 8.0 BTDC (for the pulse method) since the book claimed 8.5 BTDC,and there where no turbo's at the time,thus no need for such an extra amount of fuel.so retarding the timing after a turbo install will likely add more performance according to the results posted there.
i see some guys pushing 9 and even 9.5 BTDC on turbocharged engines! not sure what they're thinking there.they're going the wrong way.
im surprised they don't complain about turbo lag.
also see here:
https://www.ford-trucks.com/forums/3...mp-timing.html
so i would likely try using 7.5 - 8.0 BTDC (for the pulse method) since the book claimed 8.5 BTDC,and there where no turbo's at the time,thus no need for such an extra amount of fuel.so retarding the timing after a turbo install will likely add more performance according to the results posted there.
i see some guys pushing 9 and even 9.5 BTDC on turbocharged engines! not sure what they're thinking there.they're going the wrong way.
im surprised they don't complain about turbo lag.also see here:
https://www.ford-trucks.com/forums/3...mp-timing.html
Thread Starter
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Elder User
Joined: Jul 2006
Posts: 621
Likes: 1
From: Near the ocean
I did almost the same exact thing recently, too. Put a banks sidewinder on her, some new injectors and I still haven't had engine timed. I turned up IP 1.5 flats and no black smoke yet. I think you might want to turn fuel down a little because my EGT's are at 450 at about 60mph. I'm just saying, if you run her rich and then tow something, you could really overheat your engine (melt pistons, etc.).
The reason I settled on 2 1/2 clicks on the IP is, I was following instructions from one of our forum contributers. If I remember correctly, he stated he turned it up till he got just a slight amount of smoke on accelaration. I don't even get that. I have NEVER had the EGT over 1000 deg and that was climbing a LONG hill in the Rockies with my trailer. The Banks instructions state "1250 max"
I don't know how to incorporate two or more posts into my post so please read my next post.
Thank you for your reply
Tom D
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Elder User
Joined: Jul 2006
Posts: 621
Likes: 1
From: Near the ocean
"A general rule to follow, and a good starting point for tuning, is that the more fuel you're running, the more conservative the ingnition timing. It all goes back to cylinder pressure. Adding fuel increases the combustion pressure since there is now more gas trying to expand rapidly during the power stroke."
so i would likely try using 7.5 - 8.0 BTDC (for the pulse method) since the book claimed 8.5 BTDC,and there where no turbo's at the time,thus no need for such an extra amount of fuel.so retarding the timing after a turbo install will likely add more performance according to the results posted there.
i see some guys pushing 9 and even 9.5 BTDC on turbocharged engines! not sure what they're thinking there.they're going the wrong way. im surprised they don't complain about turbo lag.
also see here:
https://www.ford-trucks.com/forums/3...mp-timing.html
so i would likely try using 7.5 - 8.0 BTDC (for the pulse method) since the book claimed 8.5 BTDC,and there where no turbo's at the time,thus no need for such an extra amount of fuel.so retarding the timing after a turbo install will likely add more performance according to the results posted there.
i see some guys pushing 9 and even 9.5 BTDC on turbocharged engines! not sure what they're thinking there.they're going the wrong way.
im surprised they don't complain about turbo lag.also see here:
https://www.ford-trucks.com/forums/3...mp-timing.html
Tom D
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Elder User
Joined: Jul 2006
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From: Near the ocean
I tow a 27.5 ft 5th wheel. GVWR is 8340.
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Post Fiend
Joined: Nov 2003
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From: Nutter Fort, WV
One thing comes into play here, where is your thermocouple located?
After the turbo, 950 is your max EGT.
Pre turbo, 1250 is your max EGT.
On a very long pull, you should drop either number by 50 to 100 degrees.
After the turbo, 950 is your max EGT.
Pre turbo, 1250 is your max EGT.
On a very long pull, you should drop either number by 50 to 100 degrees.
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Elder User
Joined: Jul 2006
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From: Near the ocean
Getting plenty of snow to push this winter?
Thanks Dave
Tom D
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
I run somewhere around 9.5 or 10 degrees advanced, by the ear method.
If I run less, the power and boost just is not there.
Then again, since I am not exactly stock, several things are different for me.
Out plowing this morning at 3 AM, 15 degrees and 1150 was easy to get driving between jobs on the hills.
My thermocouple would be sticking in the #8 exhaust port if it were a little longer.
The way my engine runs when it is cold, I really need to figure out how to get an intercooler in there.
If I run less, the power and boost just is not there.
Then again, since I am not exactly stock, several things are different for me.
Out plowing this morning at 3 AM, 15 degrees and 1150 was easy to get driving between jobs on the hills.
My thermocouple would be sticking in the #8 exhaust port if it were a little longer.
The way my engine runs when it is cold, I really need to figure out how to get an intercooler in there.
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