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Old 06-27-2009, 03:43 AM   #1
VolvoSteel
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Default Best Turbo For A 93 B230FT Engine

Hi All, ive been a member for awhile but havent had a project to work on, well i now have a 1990 745T MANUAL Factory! I have since aquired a 93 B230FT Engine with Turbo, i understand the Turbo on the 93 Put and additional 18HP than the previous Mitsu, my fist gear is really short, this is the first manual Volvo i have owned, its kinda pointless to even have the turbo engage in fist gear, should i stay with the Mitsu or go Garrett? another completly diff turbo? I have am taking the 93 block and Head into the machine shop soon to have everything done i might even replace the pistons and connecting rod's but havent decided on that yet. I would like to get everyones input on this i want to pump all i can into this engine, i plan on putting a bumber sticker on the back that says You've Just Been Passed By A Volvo if that tells you anything!

Last edited by VolvoSteel; 06-27-2009 at 04:00 AM..
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Old 06-27-2009, 04:18 AM   #2
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not sure where your getting your info from. the only jump that big was from the turbo+ option that raised boost. turbo's were the same from 90+ all td04-13C, but yours might have the smaller cold sided TD05-12B but the power on those were still the same stock unless turbo+ was fitted
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Old 06-27-2009, 04:31 AM   #3
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not sure where your getting your info from. the only jump that big was from the turbo+ option that raised boost. turbo's were the same from 90+ all td04-13C, but yours might have the smaller cold sided TD05-12B but the power on those were still the same stock unless turbo+ was fitted
I dont remember exactly where i read it, but from i remember it was the location of the wastegate? from Lower to upper on the newer Mitsu that gave it alittle more umph. The one i got with the 93 engine is slightly different from my 90. even so should i stay with the Mitsu or switch it to a Garret? i know the garret's have more boost in the upper RPM range verses the Mitsu, at 70mph i can barley tell that my Mitsu turbo has even kicked in whereas my previous 700's ive owned had a garret and you could tell.
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Old 06-27-2009, 09:01 AM   #4
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Boost level is the same. 7-8 psi stock. You could put on a manual boost controller and run about 12ish psi, but that's the upper limit for the Mitsu 13c turbo (which it sounds like you have). Here's what I would do: Try the manual boost controller first. That may make you perfectly happy. If you still want more, get a Mitsu 15G turbo off of an 850, reclock the housings so it will bolt up to your RWD manifold, make a wastegate bracket, and run 15 psi. That's what i have. It's FUN.
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Old 06-27-2009, 10:30 AM   #5
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Forget everything you know, all you are talking about is so wrong it is not even close.

Start over and read from scratch.

a 90 745 manual should have the T25(tiny as crap). a 93' engine should be a TD04H-13c(just as tiny as crap)

a nice bolt on turbo is a TD04HL-15g or 16t off a later fwd car. IF you have $ to spend and want one of the best stock looking turbos find a 19t(there is someone that sells them) Otherwise when you are ready to make big power step up to some kind of Holset or T3/T4. The Mitsu turbos are a newer design and more aggresive design. While smaller they are still better pound for pound in stock form

Either way go back and read from scratch.
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Old 06-27-2009, 11:20 AM   #6
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Yeah my 90 wagon factory manual car had the T25 turbo. It did have a .63 hotside. It did last 450k miles before it seized. Great little turbo.

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Old 06-27-2009, 04:31 PM   #7
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a .63 T25 hot side, nothing close to a .63 T3 hot side
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Old 06-28-2009, 02:44 AM   #8
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I think a gt2871 would be perfect for the 8v 13mm rod motor...wonder if she'll hold...
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Old 06-28-2009, 02:58 AM   #9
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t3/to4e .63/.50.
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Old 06-28-2009, 03:01 AM   #10
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So the T3/T4/Holset/ Are the bolt on one's i should be looking at, A GT2871 Might Hold? are you joking or are you serious.
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Old 06-28-2009, 03:04 AM   #11
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holset is a little big. A t3/t4 will bolt in. you will need a cbv valve though. I loved my set up when i had it on my wagon at 15psi at qualcomm it would do a 9.2 in the 1/8th
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Old 06-28-2009, 03:30 AM   #12
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Yea im thinking a T4 is my best option, ill probly swing by the pick yard and get a manifold and turbo and just rebuild it, probly be cheaper in the long run, Turbo City is local to me so i can go pick up a rebuild kit from them.
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Old 06-28-2009, 03:37 AM   #13
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where are you located? get a t3 off a older 240 without a intercooler and it will have a .63 housing. As for the cold side i liked the .50 trim to4e. It spooled decent but the top end was crazy esp with 3'' exhaust.
Edit your car should have the better exhaust manifold already.
Edit2 better get a spare m46 trans when your there
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Old 06-28-2009, 04:03 AM   #14
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I live in Southern California Lake Elsinore, Sadly i have yet to see a M46 at any pick yard around here, and the 4 i tend to frequent have Large EURO sections with 10+ volvo's in each. im sure one day ill come accross one, i plan on resealing and replacing the Clutch once i get the engine out of my 90 and if possible and accesable replacing the OD switch and 4th gear sensor i think it called.
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Old 06-28-2009, 09:58 AM   #15
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Quote:
Originally Posted by dieselboy View Post
holset is a little big. A t3/t4 will bolt in. you will need a cbv valve though. I loved my set up when i had it on my wagon at 15psi at qualcomm it would do a 9.2 in the 1/8th
My HY35CW Spools just as fast as the .63/.50 (t3/t4)turbo on the green car in the driveway. And that car is 9.8:1 vs my 8.2:1 along with his manual and my auto. Oh and did I mention I also have a blown HG?
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Old 06-28-2009, 03:54 PM   #16
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Quote:
Originally Posted by VolvoSteel View Post
I dont remember exactly where i read it, but from i remember it was the location of the wastegate? from Lower to upper on the newer Mitsu that gave it alittle more umph. The one i got with the 93 engine is slightly different from my 90. even so should i stay with the Mitsu or switch it to a Garret? i know the garret's have more boost in the upper RPM range verses the Mitsu, at 70mph i can barley tell that my Mitsu turbo has even kicked in whereas my previous 700's ive owned had a garret and you could tell.
I think what this maybe is based on, is the B230FT vs. B230FK.
Thought, I dont know if you even got the B230FK in the states.

The B230FK had a non adjustable WG on the 13C turbo, whereas the B230FT had an adjustable WG.

The base pressure on the FK was also 0.35 bar vs. 0.65 on the b230ft.
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Old 06-28-2009, 05:39 PM   #17
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im glad to hear i should have no problems installing my 16t into my 91 740t. as i understand they are safe up to about 16 psi? im planning on setting it for 14-15. ive already asked on another thread about what i need to ensure the turbo is mint. If it has no play and/or damage should i still rebuild? Im plannin on a blow off valve too.
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Old 06-29-2009, 12:56 AM   #18
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Quote:
Originally Posted by VolvoSteel View Post
So the T3/T4/Holset/ Are the bolt on one's i should be looking at, A GT2871 Might Hold? are you joking or are you serious.

If you want a bolt-on turbo, you'd want a 19T for max power.

Since you're in CA, you may want to check with the smog laws before you make your purchase.
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Old 06-29-2009, 11:00 AM   #19
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Quote:
Originally Posted by Waldo View Post
im glad to hear i should have no problems installing my 16t into my 91 740t. as i understand they are safe up to about 16 psi? im planning on setting it for 14-15. ive already asked on another thread about what i need to ensure the turbo is mint. If it has no play and/or damage should i still rebuild? Im plannin on a blow off valve too.
I wouldn't say you are safe at 15psi just right off the back, there are a ton of other little things you will want to make sure it right, the fact that you are in CA with watered down 91oct fuel does not help your case.

Near the end of my time living in CA i would only be able to run 10psi on 91oct pump fuel due to all of the crap they started to put in it and that was with all kinds of supporting mods.

Either way you will for sure want to upgrade @ least your intercooler, exhaust and a set of chips and more fuel(be it larger injectors or even just a 4bar fpr) to safely run that kind of boost otherwise you are running a risk of venting your block
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Old 06-29-2009, 04:05 PM   #20
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Quote:
Originally Posted by thelostartof View Post
I wouldn't say you are safe at 15psi just right off the back, there are a ton of other little things you will want to make sure it right, the fact that you are in CA with watered down 91oct fuel does not help your case.

Near the end of my time living in CA i would only be able to run 10psi on 91oct pump fuel due to all of the crap they started to put in it and that was with all kinds of supporting mods.

Either way you will for sure want to upgrade @ least your intercooler, exhaust and a set of chips and more fuel(be it larger injectors or even just a 4bar fpr) to safely run that kind of boost otherwise you are running a risk of venting your block
Yes, this is true.

Before maxing out the 13c, one needs:
* China Cooler
* Chips
* 3" Downpipe
* good exhaust

Then 220hp is doable on the 13C.
If one wishes to pass 220hp, one has to also swap:
* Injectors (they are already maxed out at 220hp)
* Turbo
* Maybe colder spark plugs(?).
* Cam should also be swapped (I'd swap it before swapping turbo).
* Clutch
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Old 06-29-2009, 04:56 PM   #21
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Ok... you live in the heat... I noticed a big difference with a intercooler and a larger more efficient turbo that doesn't make boost at idle. 3'' exhaust is the best bang for you buck imho. I passed my t3/t4 off when they smogged it. On 91 here i was running 15psi with a 4bar fuel pressure regulator.
I was running 12psi through a 13c and it literally melted. The wastegate hole melted out. Im just a mitsu hater though.
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Old 06-29-2009, 06:55 PM   #22
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Quote:
Originally Posted by dieselboy View Post
Ok... you live in the heat... I noticed a big difference with a intercooler and a larger more efficient turbo that doesn't make boost at idle. 3'' exhaust is the best bang for you buck imho. I passed my t3/t4 off when they smogged it. On 91 here i was running 15psi with a 4bar fuel pressure regulator.
I was running 12psi through a 13c and it literally melted. The wastegate hole melted out. Im just a mitsu hater though.
I'm not saying the 13C is the bomb, but I'm saying that it's not the right end to start upgrading.

You cant pull out 300hp with 220hp injectors and a limiting downpipe, no chips :-) Even if the turbo would support it, the engine would melt, as your 13C did.

This is why I say:
Start with chips, downpipe, intercooler, etc. then cam, then you can upgrade turbo.
Also maybe a larger AMM :-)

If you run T-cam, 337ccm injectors and a huge 500-600hp turbo, it will not work very long.
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Old 06-29-2009, 09:12 PM   #23
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Quote:
Originally Posted by dieselboy View Post
where are you located? get a t3 off a older 240 without a intercooler and it will have a .63 housing.
It wasn't just on the non-intercooler model. A watercooled turbo on a 240 is a replacement/rebuild and may have a .48, but not always. But a non-watercooled turbo could be from an early 740 turbo with a .48 or it could be original/rebuilt and have a .63. So you really just need to check and see what housing it has. A lot of them are cracked badly, so it's a good idea to inspect before buying regardless.
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Old 06-29-2009, 09:34 PM   #24
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thanks

Last edited by Waldo; 07-02-2009 at 11:01 AM..
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Old 02-03-2020, 10:38 PM   #25
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W/out all the abbreviations and volvo code words , cansomeone Puh leez Help ? I want to upgrade my turbo in my 91 740 wagon B230ft. As of right now the car has these mods... manual boost controller, Lost art of main computer chippy , I cant remember but I think it has an ezk chippy as well , Real fresh air sealed ram air system , currently has a straight thru exhaust w/only a muffler . Now,Then these are the pieces Ive gathered and work recently done , timing belt , front seals,water pump ,new radiator, GIANT ISUZU intercooler CFR ? brand, new air cleaner , coming up new cap/rotor,intake manifold gasket,with throttle body gasket , coolant sensor, crank position sensor , complete stainless steel 3" downpipe and exhaust thru magnaflow 3" stainless muffler ,AEM wideband ,silicone hoses ... furthermore I'm game for larger injectors { if someone wants to suggest which I should get } and maybe even a cam upgrade { make suggestion please } the car has quite a few miles 230,000 ish ,and never opened up , for now I dont want to do internals etc *********** Im basically looking for a good somewhat drop in TURBO upgrade , that might work W/ my new pipe ,but want as much bang for my buck ? Im very open to suggestions as this car is a keeper sleeper my SS so to speak Sveedish Sleeper I also plan on future head work/cam etc etc but like Horschack " I'm so confused ' 15 G ,!6 G ,18T.19 T , I see some nice refurbbed units on line etc / ALL HELP IS GREATLY APPRECIATED Thanxz Again Ben
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