t04b(v-trim) Bolt on Discussion

[1029TSG]

Garrett rates the CFM's at 1 bar and the lbs/min is max flow.

 

[sweet97]

OK. If CFM=lbs.min/.069 how can a calculation be made for, say the most common-50 trim @ 1 bar so that a garrett can be copared to a Mitsu.?
Simply put what CFM does the V-trim, 50 trim, flow at 1 bar or 15 PSI? This has been confusing and I'm close to making the comparison! mark
The V-trim at 48lbs. per minute woul be 695CFM at full flow. Anyway to calculate CFM @ 1 bar or 15 PSI? How about the factors that come into play for the flow, mods? M.

 

[1029TSG]

That's a good question. The Garrett list that I have only shows lbs/min. I can try and call our distributor on Monday and see if there's an "official" CFM rating for each of the Garrett turbos.

 

[notractiongst]

on my logger @ 19-20 PSi @ 7200 RPM I recorded 29.39 lbs on my v trim. how accurate are the loggerswhen it comes to lb a min? kiinda makes me wonder if something is wrong with my turbo

 

[sweet97]

on my logger @ 19-20 PSi @ 7200 RPM I recorded 29.39 lbs on my v trim. how accurate are the loggerswhen it comes to lb a min? kiinda makes me wonder if something is wrong with my turbo

I believe it has to do with the mods a motor has. I would think you have a lot more potential with that turbo. Start with the intake, is it a 3" or 4" intake? Do you run a GM MAF as a blow thru, out of the filter and incoming air's path? I have a set-up like tat, also running the filter into the space the stock IC once occupied, true cold air. Then how well does the IC flow. What sizeIC piping? Stock intake elbow, upper IC pipe, long or short route. Exhaust, 3", 2.5", CAT, straight thru muffler? I am looking at these areas on my set-up and would like to know from someone who truly knows the characteristics of turbo flow and what affects it. Mark

 

[sweet97]

on my logger @ 19-20 PSi @ 7200 RPM I recorded 29.39 lbs on my v trim. how accurate are the loggerswhen it comes to lb a min? kiinda makes me wonder if something is wrong with my turbo

Checked out your mod list and there wasn't anything I would change, not that I am that experienced!!
I would get the FMIC flow rate if you can to find out if it is a big restriction or not. what a/f do you run, base timing....do you have an upgraded fuel pump and AFPR? I believe you would run lean without them.
All comes down to tning and I am a "newbie" whan it comes to that. I have a wideband a/f meter and my motor likes an a/f of about 10.5:1 or a 10.9:1. At a 12.xx:1 I get a knock sum into the 20's from a lean condition. That's when I installed the pump and AFPR.
I have a formula for HP. HP=(lbs./min)*10.86 which gives you a 315HP at the motor. Room for lots of improvement.
Get the lbs./min to 35 and add 55HP.
I will have my car on the road in April, Lord willing and I will start the tuning process. I have a 50 trim which has the bullseye turbine which is BEEFY! It flows the same as the to4b/one lb./min more. Mark

 

[RavenX]

I finally got the engine out of my car today so am very happy sometime during next week i will post when i am finished. It sucks i couldn't try to fully use the turbo but oh well i guess i'll have to wait until the 6bolt block goes in!

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[pianoman]

Finally surpassed the JRC thread.

 

[rjgeier]

25psi I beleive

lbs/min isnt based on psi alone. What about porting, intake manifold size, larger TB.

 

[RavenX]

lbs/min isnt based on psi alone. What about porting, intake manifold size, larger TB.

That was a prett short comment i made but your right your mods also depend on how you will maximize the efficiendy of the turbo

Jay

 

[nazthug]

on my logger @ 19-20 PSi @ 7200 RPM I recorded 29.39 lbs on my v trim. how accurate are the loggerswhen it comes to lb a min? kiinda makes me wonder if something is wrong with my turbo

@ 6800rpm at 16psi, i get 31lb on my vtrim

just finished my clutch install this weekend and am now breaking it in, will dyno at the end of the week, along with my roomates srt4 stage 3(that i just installed as well)

We'll see how they compare, i hope this clutch holds, actually, i hope the flywheel was resurfaced right because the shop wasnt too accurate on step measurements, rednecks

The clutch is the south bend clutches OFE series clutch, with feramic on 1 side, organic on the other, and it feels really good now, stock pedal feel, but nicer feel, strong engagement, and no noises, we'll just see if it holds, but so far so good.

i just want 300whp+, anything over that is a BONUS for me

 

[fwdsal]

does anyone on here have a to4e 60trim yet

 

[99gst_racer]

1029TSG - Just curious. Your info says you are located in FL, but your website says Muskegon, MI.....??? Maybe I missed something......

 

[RavenX]

1029TSG - Just curious. Your info says you are located in FL, but your website says Muskegon, MI.....??? Maybe I missed something......

As far as i know the shop is located in Michigan and Dave lives in jacksonville,FL

 

[khendriksma1]

Yeah, I think you are right. I believe he told me that everything is shipped out of Muskegon, MI, but when I called him, I had to call a Florida number.

 

[RavenX]

Yeah, I think you are right. I believe he told me that everything is shipped out of Muskegon, MI, but when I called him, I had to call a Florida number.

Thats probably Dave's home or cell number that you called

Jay

 

[prostreetdsmx1]

yeah bullseye is based in MI and Daves office is in Florida.

 

[notractiongst]

Ive had my v trim for a year now and ran 20 psi daily but its finally about to go im getting alot of up and down shaftplay ..can anyone show me where to get ar ebuild kit for one of these?

 

[1029TSG]

Yeah, you guys got it right. The entire operation is in Muskegon, MI and I stay warm down here in mostly sunny Florida.

Where did you buy your V-trim? Some up and down play is ok, have the wheels contacted the housing?

 

[Black95TSIawd]

Ive had my v trim for a year now and ran 20 psi daily but its finally about to go im getting alot of up and down shaftplay ..can anyone show me where to get ar ebuild kit for one of these?

is it water cooled? and or turbo timed. From reading this thread, i think the water kits just came out so you might not have it. If you did not turbo time your turbo, then yea, you should be getting play.

 

[prostreetdsmx1]

Yeah, you guys got it right. The entire operation is in Muskegon, MI and I stay warm down here in mostly sunny Florida.

Where did you buy your V-trim? Some up and down play is ok, have the wheels contacted the housing?

that's what i was going to say, some up and down shaft play is ok as long as there isn't any contact between the housing and the wheels.

 

[theNEW]

David, I turbo time everytime. But just wondering, how long do you recommend for regular driving? I usually stay with the minute baseline. And for harder driver i bump up to 2 - 2:30. I really don't drive that hard right now as I have some other projects under way.

 

[1029TSG]

Hold the compresssor nut and push down while spinning the wheel and see if its rubbing. Try all directions, North, South, East and West. If the wheel is not scrapping the inside of the housing the turbo is fine.

 

[RavenX]

30 seconds to a minute should be enough from what i heard. For everyday cruising here to there i usually just do 30 seconds and for hard driving it can be upwards of a minute but so far no problems here

 

[prostreetdsmx1]

i normally don't recommend more than 30seconds unless you were boosting like a maniac.