Apples vs oranges (turbo question)

chillman88

Supporting Member
Supporting Member
Joined
Feb 22, 2017
Posts
6,022
Reaction score
6,152
Location
Central NY
I'd follow Russ' advice.

Yeah that's most likely what I'll do. I just wanted a few more opinions as well.

I would say that it depends on what your future plans (and hopes and dreams) are. If you're going to keep it relatively stock, with maybe a bigger wheel, etc., Then I'd go with the 088. If you're wanting to upgrade to a bigger turbo, then I'd say to go with the factory Turbo/093 set up. I may be completely wrong here, but I think that there's more drop options for the 093 set up. That's why I'm extremely happy that there's a 093 under the hood of my Ex Wife. It will be better for future turbo upgrades.

That's why I tried to spell out my plans. Nothing crazy at all, mostly stock with studs, a bigger IP and the turbo (with Russ's largest wheel).

I just don't have the money to get crazy LOL
 

Thewespaul

Supporting Member
Supporting Member
Joined
Jul 27, 2015
Posts
8,796
Reaction score
8,058
Location
Bulverde, Texas
The 088 and 093 are identical on the compressor (intake) side with them both using the same size t04B compressor wheel out of the box. The difference is the hotside where the 088 uses a stage five t350 (or p trim in some cases) and the 093 uses the smaller stage three wheel, they will both move exactly the same air because the cold side is the limitation for airflow with these. The 093 will start making boost about 500 rpms sooner than the 088 because of the better designed turbine housing, and smaller turbine wheel. with enough fuel you can make an 088 spool like an 093 but for most smaller pumps and a towing application I would 100% go with the 093. With a tow rig you need takeoff torque which the 088 will not match no matter what the modifications, I've got 088 and 093 cores on the shelf ready to be built. https://classicdieseldesigns.com/collections/turbos-and-turbo-parts
You must be registered for see images attach
 

Clb

Another old truck
Supporting Member
Joined
Mar 1, 2013
Posts
5,695
Reaction score
2,162
Location
nannyfornia
Perhaps...

But tractor pulling and towing mountains requires 2 different setups (imho).

Towing out here means 2500-3300 rpms the required grunt is to make the top of the hill (never at 500 rpms), not pull onto the road,
but at the sweet spot where you still have rpm left to accelerate (in one gear) AND above the point where the eng will NOT spool the turbo at will.
I'm gunna get rolling one way or the other.

Good bit of tech Wes.
I may be totally off base, as my days are spent "towing" not pulling:sorry:
 

Clb

Another old truck
Supporting Member
Joined
Mar 1, 2013
Posts
5,695
Reaction score
2,162
Location
nannyfornia
Not callin ya out, (been accused some lately) just my seat of the pants exp.
 

chillman88

Supporting Member
Supporting Member
Joined
Feb 22, 2017
Posts
6,022
Reaction score
6,152
Location
Central NY
Perhaps...

But tractor pulling and towing mountains requires 2 different setups (imho).

Towing out here means 2500-3300 rpms the required grunt is to make the top of the hill (never at 500 rpms), not pull onto the road,
but at the sweet spot where you still have rpm left to accelerate (in one gear) AND above the point where the eng will NOT spool the turbo at will.
I'm gunna get rolling one way or the other.

Good bit of tech Wes.
I may be totally off base, as my days are spent "towing" not pulling:sorry:

Yeah I really starting to think it boils down to how you drive because I'm getting two completely opposite opinions on this. Typically on the rolling hills around here I'm downshifting at the bottom of the hill so I'd already be spooling up by the time I hit the next hill. That could all change though since I've been NA this whole time. Might find I don't need to downshift for every hill once I get a turbo on it.

I've never had trouble getting moving (except for one time which was an engine problem, ironically right in front of Wes' place). I've had plenty of times where I'm just watching RPMs drop as I'm going no matter how much I downshift until I hit 2nd gear.... I REALLY don't like pulling up a hill in a 55 going 20mph.

I'm extremely grateful for Wes' insight, but it tends to make me lean towards the 088 more. Having a bigger turbine should be a benefit pulling hills around here, especially when modified with a larger compressor wheel.
 

Clb

Another old truck
Supporting Member
Joined
Mar 1, 2013
Posts
5,695
Reaction score
2,162
Location
nannyfornia
Fwiw
All mine were stock units
I have seen some stuff modded by russ, (never seen justins, mels nor wes' product mods) and just wow...
 

chillman88

Supporting Member
Supporting Member
Joined
Feb 22, 2017
Posts
6,022
Reaction score
6,152
Location
Central NY
Fwiw
All mine were stock units
I have seen some stuff modded by russ, (never seen justins, mels nor wes' product mods) and just wow...

Yeah I'm running a stock factory setup on Diego and even with 3.55s it's still a decent amount of difference compared to the NA with 4.10s. Gears definitely make a difference too, the 4.10 truck has noticably more grunt off the line. I know @saburai was running a modified 093 he bought from Russ on Diego before I bought it from him. He said there's a noticable difference just between the modified one and a stock setup too. He put the modified one on his new truck and Diego has the factory kit he pulled off his 94.
 

Thewespaul

Supporting Member
Supporting Member
Joined
Jul 27, 2015
Posts
8,796
Reaction score
8,058
Location
Bulverde, Texas
The 093 will simply make boost in an rpm range the 088 will not, 2000 rpms and below the 088 really isn’t adding a whole lot of air and you gotta downshift to keep your boost up, the 093 makes boost much sooner, so your torque/hp crossover is sooner typically around 2500 rpms where an 088 is peaking torque at 2500 rpms and crossing over closer to 3000 rpms.
 

IDIBRONCO

IDIBRONCO
Joined
Feb 5, 2010
Posts
12,234
Reaction score
10,925
Location
edmond, ks
The 093 will start making boost about 500 rpms sooner than the 088
That's HUGE on engines that only 3400/3500 RPM.

Towing out here means 2500-3300 rpms the required grunt is to make the top of the hill (never at 500 rpms)
I believe that you read the above statement wrong. NO turbo makes boost at 500 RPM.

The 093 will simply make boost in an rpm range the 088 will not, 2000 rpms and below the 088 really isn’t adding a whole lot of air and you gotta downshift to keep your boost up, the 093 makes boost much sooner, so your torque/hp crossover is sooner typically around 2500 rpms where an 088 is peaking torque at 2500 rpms and crossing over closer to 3000 rpms.
Doesn't holding the wastegate closed help with higher RPM power as well? This also confirms what I've seen in my past observations. I don't remember ever seeing a non wastegated turbo move the needle on a boost gauge below about 2100/2200 RPM. There may have been some, but I don't remember it.
 

Clb

Another old truck
Supporting Member
Joined
Mar 1, 2013
Posts
5,695
Reaction score
2,162
Location
nannyfornia
Towing out here means 2500-3300 rpms the required grunt is to make the top of the hill (never at 500 rpms),
edit
ive no idea what I meant here!^^^





These days I want the juice to make the hills in 3rd and be at the sweet spot where you still have rpm left to accelerate (in one gear) AND above the point where the eng will NOT spool the turbo at will.
Good bit of tech Wes.
I may be totally off base, as my days are spent "towing" not pulling:sorry:

My 093 looks to be needing a refresh at sub 60k so I m researching mods...

op howd you make out?
 

chillman88

Supporting Member
Supporting Member
Joined
Feb 22, 2017
Posts
6,022
Reaction score
6,152
Location
Central NY
I've got a reworked 088 from Russ with an upgraded compressor wheel sitting on the shelf waiting for me to get this thing studded and possibly cammed.
 

420Bullnose

Registered User
Joined
Jun 8, 2019
Posts
53
Reaction score
43
Location
U.S.A.
I'm running the 088 in my '84 6.9 with the 4 speed and 4:10s,

As of most of us, I've experienced 6.9 & 7.3 IDIs with various Turbo setups and right out the gate I prefer the 088,

The get off is decent, no boost obviously at the lower end, but that's why the 4:10s are nice and wether it's empty or loaded and going down the road @ 2000 or more RPM it pulls great and it holds boost even between shifts when you keep it in the RPM range and if it falls below the range it builds boost right back up almost in an instant (Keep in mind, that the 088 in mine is Pretty Worn & Tired)

As far as pulling hills, never had an issue with speed and the Turbo kicks in more especially when loaded.

Over all I'd go with the 088 in Tank.

Hope this helps.

420Bullnose
 
Top