Getting all sorts of opinions with turbo selection for a 1994 F150 Flareside 351w E4OD daily driver weekend drag street truck.
Will not need more than 500hp, hopefully more than 400hp.
Next upgrade, looking at turbo selection.
Currently looking at On3 Performance GT35 61mm Turbocharger GT3582.
But, in the specs, shows this is a great turbo for 1.5-3.5L engines.
How to select the proper sized turbo?
Turbo selection, 351w 500hp goal
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decipha
- Posts: 6297
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'25 F-150 5L
Re: Turbo selection, 351w 500hp goal
based on hp goal (turbo flow) and exhaust flow / AR size
a 67mm can get what you want but you run in to compressor surge when using too small of a turbo (AR) for a given engine size.
on a V8 the minimum I recommend is a 76 but in your case a 70mm would be most ideal since you have a low revver.
exhaust AR housing is very important. The base on3 turbo used to be a 70mm with either a .68 or .96 AR housing. That should work out well for you.
I have more details in the pre tune info write up with wastegates and such.
a 67mm can get what you want but you run in to compressor surge when using too small of a turbo (AR) for a given engine size.
on a V8 the minimum I recommend is a 76 but in your case a 70mm would be most ideal since you have a low revver.
exhaust AR housing is very important. The base on3 turbo used to be a 70mm with either a .68 or .96 AR housing. That should work out well for you.
I have more details in the pre tune info write up with wastegates and such.
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wwhite
- Posts: 400
- Joined: 2021 Feb 16, 15:53
- Location: Victoria, BC, Canada
- Vehicle Information: 1994 Flarside, XLT, 351w E4OD
SD48b, Quarter Horse, Burn2
Re: Turbo selection, 351w 500hp goal
How about a stock 2017-2019 Ford stock 6.7l turbo, 72.5mm I believe.
Found one locally for $500CAD.
Price is right, I think, but Is that too big?
Also, it is a Variable Geometry Turbocharger(VGT).
Found one locally for $500CAD.
Price is right, I think, but Is that too big?
Also, it is a Variable Geometry Turbocharger(VGT).
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decipha
- Posts: 6297
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'25 F-150 5L
Re: Turbo selection, 351w 500hp goal
yeah that'll work fine, can't beat that price.
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wwhite
- Posts: 400
- Joined: 2021 Feb 16, 15:53
- Location: Victoria, BC, Canada
- Vehicle Information: 1994 Flarside, XLT, 351w E4OD
SD48b, Quarter Horse, Burn2
Re: Turbo selection, 351w 500hp goal
Awesome, thank you!
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teufelin
- Posts: 3
- Joined: 2024 Jul 23, 13:13
- Location: Nashville, TN
- Vehicle Information: '94 F-150 XLT 5.0
AFR165, XE258HR-14 CompCams (35-512-8), 1.72 Rockers, HOG0 EEC4
Re: Turbo selection, 351w 500hp goal
I'm curious as to how your turbocharger implementation went?
How did you mount it and supply oil lines? I'm looking at a F250 6.7L Turbo at the yard for about $1k. Worth it?
How did you mount it and supply oil lines? I'm looking at a F250 6.7L Turbo at the yard for about $1k. Worth it?
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wwhite
- Posts: 400
- Joined: 2021 Feb 16, 15:53
- Location: Victoria, BC, Canada
- Vehicle Information: 1994 Flarside, XLT, 351w E4OD
SD48b, Quarter Horse, Burn2
Re: Turbo selection, 351w 500hp goal
Well, still not running.
Used $1k, I would not personally, unless you know it will work.
Mounting these turbos is a pain, since they are meant to mount to the diesel block in the valley.
Have to tap oil lines for the feed.
Going to mount on the frame under the box behind the cab.
Running its own oil sump with pump.
My turbo has water coolant feed as well, haven't figured that out.
I'm actually attempting to sell this turbo, as it is too much work to get this style implemented.
If it doesn't sell, then I'll keep collecting parts to make it work. I'm in no rush.
The more I think about it, a super charger that bolts on the front of the engine, running off serpentine belt is probably best and easiest for mounting.
Used $1k, I would not personally, unless you know it will work.
Mounting these turbos is a pain, since they are meant to mount to the diesel block in the valley.
Have to tap oil lines for the feed.
Going to mount on the frame under the box behind the cab.
Running its own oil sump with pump.
My turbo has water coolant feed as well, haven't figured that out.
I'm actually attempting to sell this turbo, as it is too much work to get this style implemented.
If it doesn't sell, then I'll keep collecting parts to make it work. I'm in no rush.
The more I think about it, a super charger that bolts on the front of the engine, running off serpentine belt is probably best and easiest for mounting.