t04b(v-trim) Bolt on Discussion

[daren_p]

1029 said most are getting full boost by 3300-3500
w/ the T04B.

Really, that low? I thought guys were quoteing around 4000 rpms on this post earlier? Maybe they don't have all the supporting mods? 3500 rpm's I could deal with

 

[RavenX]

Each car is different like for me with the built head and fp2 cams i would get 15psi by 4,000 after i fixed the wastegate issue i was having. Am sure i could get it lower by tuning it with dsmlink and such but i'll have to wait for that time until i swap in the 6bolt

 

[1993eclipseGS]

The spool up time will depend on the cars set up. The supporting mods, And the tuning.

 

[nazthug]

putting my clutch on tomorow, dynoying saturday, i hope i can find some race gas,

Still going to be on 550's so i will be limited to about 18psi

 

[1029TSG]

Some will get 15-20 by 3500 or better with "all" the supporting mods. Typically its between 3500-3800 rpm.

 

[m1nd64m3]

what are "all" the supporting mods in your opinion?

 

[1029TSG]

Whatever it would take to support 400+ whp.

3" o2 eliminator turbo-back
900+ cfm FMIC
Cams
Ported head (recommended)
Exhaust manifold (ported or aftermarket)
Injectors and fuel pump
Engine Management (No or Blow-thru MAS)

Eliminating the "Pull-thru" MAS makes a substantial increase in throttle response and overall power. Most who have switched notice a 2-300 rpm decrease in spool up.

 

[RavenX]

Whatever it would take to support 400+ whp.

3" o2 eliminator turbo-back
900+ cfm FMIC
Cams
Ported head (recommended)
Exhaust manifold (ported or aftermarket)
Injectors and fuel pump
Engine Management (No or Blow-thru MAS)

Eliminating the "Pull-thru" MAS makes a substantial increase in throttle response and overall power. Most who have switched notice a 2-300 rpm decrease in spool up.

Are you saying you recommend switching over from the 2g mas over to the GM 3inch maft?

 

[DsMWookie]

http://www.slowboyracing.com/more.php?id=154&


do you think this intercooler will suffice for my to4b? i right now have a smaller HKS intercooler and blow thru and I want to get the correct supporting mods. Only thing I can think of is larger than my RC 550's and some cams (cams first).

 

[Coup D E'Tat]

http://www.slowboyracing.com/more.php?id=154&


do you think this intercooler will suffice for my to4b? i right now have a smaller HKS intercooler and blow thru and I want to get the correct supporting mods. Only thing I can think of is larger than my RC 550's and some cams (cams first).

I would really hope so. That core is huge, and should cool a whole hell of a lot.

 

[RavenX]

http://www.slowboyracing.com/more.php?id=154&


do you think this intercooler will suffice for my to4b? i right now have a smaller HKS intercooler and blow thru and I want to get the correct supporting mods. Only thing I can think of is larger than my RC 550's and some cams (cams first).

I have to disagree get the injectors first either 650's or 750's. Then when you spring for the cams do some gasket match port work on the head and get it done all at once

 

[daren_p]

Well this is my mod list

injen intake
mbc
upper & lower ic pipes
1g bov
ported exhaust mani.
ported O2 sensor housing
rre downpipe (2.5" inlet expands to 3" @ flex section)
3" high flow cat
apexi N1 exhaust
aeromotive fpr
255hp pump
hrc 625 injectors

will be adding a cf dual friction clutch & dsmlink @ the time of the turbo install. If I went with the t04b I would add a 3 or 4" intake & 680cc (or larger) injectors but I would still have my stock smic for a month or 2 before I get a proper fmic. So could I run this turbo @ a low boost maybe 15psi on the stock smic? My engine is complety stock & being that I have the smaller 2g intake mani & head, I would probably spool around 4000? Would this turbo be overkill for my current setup? I dont want something that going to seem laggy and Im not gettin the full benefit out of it.

 

[onegee]

Whatever it would take to support 400+ whp.

3" o2 eliminator turbo-back
900+ cfm FMIC
Cams
Ported head (recommended)
Exhaust manifold (ported or aftermarket)
Injectors and fuel pump
Engine Management (No or Blow-thru MAS)

Eliminating the "Pull-thru" MAS makes a substantial increase in throttle response and overall power. Most who have switched notice a 2-300 rpm decrease in spool up.

dang..

I know it was answered that this FMIC (http://www.extremeintercoolers.com/new_page_2.htm) would limit the Vtrim, but could you define "limit"? Like will it show up as a HP limit, ability to run a certain amount of boost limit on pump gas limit, etc?

 

[sweet97]

Yes to your questions. If the turbo flows 700+CFM @ 15PSI and the IC will flow 650CFM HP/boost would be` restricted. A 900CFM IC was recommended for a reason.
I run a 50 trim, very close to yours. I tried the dejon street mic and could barely muster 13 psi without excessive knock. The 1080CFM Spearco I am trying now alowed 18PSI without knock and it ran the 18PSI without having me change the MBC setting so it has much less restriction also. How it performs in 80* temps may be another story. Mark

 

[awdwhip]

hey guys sorry to interupt but how do you post a new thread i want to ask a question but i dont know how to do it. let me know

 

[olmytsi]

Enter the forum u want to post in (not thread) and click new thread at the top of the page.

 

[awdwhip]

thanx, i got it

 

[awdwhip]

thanx, i got it

 

[RavenX]

Well this is my mod list

injen intake
mbc
upper & lower ic pipes
1g bov
ported exhaust mani.
ported O2 sensor housing
rre downpipe (2.5" inlet expands to 3" @ flex section)
3" high flow cat
apexi N1 exhaust
aeromotive fpr
255hp pump
hrc 625 injectors

will be adding a cf dual friction clutch & dsmlink @ the time of the turbo install. If I went with the t04b I would add a 3 or 4" intake & 680cc (or larger) injectors but I would still have my stock smic for a month or 2 before I get a proper fmic. So could I run this turbo @ a low boost maybe 15psi on the stock smic? My engine is complety stock & being that I have the smaller 2g intake mani & head, I would probably spool around 4000? Would this turbo be overkill for my current setup? I dont want something that going to seem laggy and Im not gettin the full benefit out of it.

You have everything but why haven't you upgraded to a fmic? thats like one of the most crucial things you have to do. Either way i highly doubt you will be able to run 15psi on the stock smic. Thats gonna heatsoak on the first run. Hell with my evoIII and supra smic after the first pass on 18psi the supra smic was done. I would get a 4inch intake from forced performance and get the 4 to 3 inch reducer and be done with it on that end. Like i said 650 or 750 injectors to take full advantage of this turbo. The stock 2g head and mani will be ok so don't worry about it too much. You should actually spool around 3500-3800 like everyone else. Just remember that fmic is a very crucial part of the equation for this turbo so try to get that before you install the turbo.

Jay

 

[onegee]

Yes to your questions. If the turbo flows 700+CFM @ 15PSI and the IC will flow 650CFM HP/boost would be` restricted. A 900CFM IC was recommended for a reason.
I run a 50 trim, very close to yours. I tried the dejon street mic and could barely muster 13 psi without excessive knock. The 1080CFM Spearco I am trying now alowed 18PSI without knock and it ran the 18PSI without having me change the MBC setting so it has much less restriction also. How it performs in 80* temps may be another story. Mark

Thanks for the reply. I went ahead and looked at the dejon street fmic. It measure 15.5x7x3 with a top to bottom style FMIC (http://www.dejontool.com/DSM-1g FIC.htm). Compared to the (32 w/ endtanks) 25x7x2.8 core of the kit in question and it also being side to side flow, wouldn't that be a big difference as far as cooling capabilities?

Btw, i'm not sure at what PSI that the 700CFM of that turbo is rated at, or if its even rated in that manner, but I personally will only run 18psi on the street and no more than 21psi at the track on pump. I'm not sure if at those boost levels the vtrim will be generating enough heat or flowing enough air for the FMIC in question to be a hinderance ? I don't plan on "maxing" out the turbo so with that in mind, will the street fmic still be okay? Not trying to push the issue of using the street because if I *NEED* the race i'll purchase it, but I'd like to just make sure before buying anything.

Thanks for the help btw.



**edit** DOH, didn't see the 700cfm+ @ 15psi.

 

[sweet97]

The 700+ at 15 psi is from bullseye's rep. Rated at what 48lbs/min? My 50 trim is 49lbs/min and the dejon street was not close. Dejon race is very capable. Check out the johnny racecar FMIC thread. I really think it shows the same IC referrenced for under $300./no pipes. The requirements for the V-trimwere given at 900cfm for the IC. I will try to make the 2-221 Spearco do the job. I woud have gone larger and it was not the cash but the bumper hacking that kept me back. Mark

 

[onegee]

The 700+ at 15 psi is from bullseye's rep. Rated at what 48lbs/min? My 50 trim is 49lbs/min and the dejon street was not close. Dejon race is very capable. Check out the johnny racecar FMIC thread. I really think it shows the same IC referrenced for under $300./no pipes. The requirements for the V-trimwere given at 900cfm for the IC. I will try to make the 2-221 Spearco do the job. I woud have gone larger and it was not the cash but the bumper hacking that kept me back. Mark

I'd rather not hack the bumper as well. Its not really a big deal to most people, but I'd just prefer not to.

I just might have to go with the race core and hack the bumper anyway =/.

 

[notractiongst]

at what PSI is the v trim supposed to flow 48 lbs a min?

 

[RavenX]

at what PSI is the v trim supposed to flow 48 lbs a min?

25psi I beleive

 

[sweet97]

V-trim - 48 lbs/min
50 trim - 49 lbs/min
H-3 - 50 lbs/min

Those are the "official" ratings from Garrett. With that being said, all three of these turbo combinations are very similar in flow numbers, they just make power in slightly different ways. The V-trim and 50 trim have indentical inducers, the 50 trim has a larger exducer (just under .25"). This larger exducer allows the turbo to be more efficient at higher boost levels. The H-3 has nearly a 60mm inducer that will provide more flow at lower boost levels than either the V or 50.

The Mitsu turbo's are rated at "X" CFM @ 15PSI.
How are the lbs./min. rated? Are they at a certain CFM or is it the max flow under the best conditions, etc.? Mark