Official TVS Thread!!!

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12-07-2013, 12:29 PM

#7776

Mendomar06

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Only crappy part about tortilla juice is that it's not available here, there are two pumps iirc and they are both way out of the way.

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12-07-2013, 12:58 PM

#7777

RooTBeeR

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so...
stock cams/head
tvs

does it make sense to have a slight boost spike from 7K rpm up?

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12-07-2013, 01:02 PM

#7778

JapEatr

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Yes

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12-07-2013, 02:18 PM

#7779

RooTBeeR

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ok. never really though about it before, but stock cams quit making power around 6700-6800 so over that airflow "drops" making boost spike

brain trying to function this morning.

Last edited by RooTBeeR; 12-07-2013 at 02:44 PM.

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12-07-2013, 02:28 PM

#7780

freakta

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I just acquired a set of cams and will be revving the engine out to about 8k. Will my 2.5 be too small for that rpm? What's a good pulley for 8k?

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12-07-2013, 02:43 PM

#7781

RooTBeeR

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no pulley, just run it on the shaft

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12-07-2013, 03:42 PM

#7782

TStone

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Quote:

Originally Posted by RooTBeeR

no pulley, just run it on the shaft

That's what MrB does

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12-07-2013, 03:59 PM

#7783

RooTBeeR

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wrong shaft though

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12-07-2013, 04:08 PM

#7784

RooTBeeR

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Quote:

Originally Posted by freakta

I just acquired a set of cams and will be revving the engine out to about 8k. Will my 2.5 be too small for that rpm? What's a good pulley for 8k?

Quote:

What PSI can I expect from "x" pulley? *note, this is with 2.5" exhaust and stock header/dp. Take off 1-3psi depending on exhaust components

64mm / 2.5" ~ 27.5 psi
70mm / 2.75" ~ 25 psi
75mm / 2.95" ~ 22.5 psi
80mm / 3.15" ~ 20 psi
85mm / 3.35" ~ 17.5 psi
89mm / 3.5" ~15psi

Per Area47, note this is with a higher redline w/ upgrade valvetrain: as a slight correction to the psi reference.
if you spin the motor high enough a 3.1 pulley will make 23psi. a 2.9 will make 25, and a 2.75 will make 26.5. 99% of the tvs owners will not spin their engines to 7900 to see this. i personally have seen 27psi out of the 2.75 ring

um, a 2.7" i guess

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12-07-2013, 05:13 PM

#7785

100% METH

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Quote:

Originally Posted by RooTBeeR

ok. never really though about it before, but stock cams quit making power around 6700-6800 so over that airflow "drops" making boost spike

brain trying to function this morning.

That Tvs on the 2.9 had no problem making power to 7500 on a stock head and cams.

Quit making the mistake of placing the Tvs well out of its efficiency unless you can drop the PR low enough on a smaller pulley. Then your only obstacle is revs

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12-07-2013, 05:15 PM

#7786

100% METH

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With three people in the car, ad a trunk full of tools. We were able to shock the tires hard enoug with a quick downshift into 3rd and jab of the throttle.

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12-07-2013, 05:18 PM

#7787

freakta

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Boost isnt the problem, it was more of the rpm on the tvs i was worried about. Ive read they are safe to spin to 22k but not sure where they are the happiest or what pulley will get them there at my rpm

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12-07-2013, 07:15 PM

#7788

Tjolley

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Up date on the 2.4
With the Tvs 2.6 pulley im seeing 18psi at 5500 rpm

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12-07-2013, 08:15 PM

#7789

SSfamilywagon

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Quote:

Originally Posted by 100% METH

Bone stock LSJ Long block with 127k
TVS - 2.9 Pulley
80s
CTI Mid length - catless - megan catback
3" custom CAI
Option B - Dual pass - Griffin H/E (IAT2 maxed on 6th pull at 135* F. Highest temp recorded today)
e85

Out of fuel... hp was still climbing past 7500... -_-

100% IDC by 7100 RPM
108% IDC by 7500 RPM

22-23 mid - 25 peak by redline
19 PSI by 6500 - 21 PSI by 7500
This particular LSJ took extremely well to leaner fueling. First 5-6 pulls were 11.7-12.0 dynoing 330whp/279 ft lbs.

And 12.7-13.0 using the same advance above =

I would just like to thank Steven for setting this dyno day up for us and playing with our car on the dyno. Was nice to make changes on the dyno and see what works best for us.

Gonna get more fuel and rpm out of the car and get back at it.

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12-07-2013, 09:44 PM

#7790

RooTBeeR

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Quote:

Originally Posted by 100% METH

no no, i know the tvs car will make power over the "limits" of the cams, but the cams dont breath as well up that high is what i meant

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12-07-2013, 10:02 PM

#7791

RooTBeeR

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Quote:

Originally Posted by freakta

yeah, map only goes to 18K ...but thats still 60+% efficient there
also rated for 2.5 pr yet map only goes to 2.2

i know youre setup moves some air too. not sure whats best for you

i'll repost this old thing not that its much help. but its still a pretty pic haha

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12-07-2013, 10:33 PM

#7792

JapEatr

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Spin it to death!!!!!

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12-07-2013, 10:36 PM

#7793

Slowbalt2000

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Quote:

Originally Posted by RooTBeeR

i know youre setup moves some air too. not sure whats best for you

i'll repost this old thing not that its much help. but its still a pretty pic haha

Now if only i knew what this meant

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12-07-2013, 11:20 PM

#7794

RooTBeeR

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Quote:

Originally Posted by JapEatr

Spin it to death!!!!!

x2.

some one needs to find the rpm limit on the blower. see where it comes apart

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12-10-2013, 09:50 AM

#7795

ThexGovenor

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Sad news guys... Im switching back to pump gas for the time being so I can drive out to Fort Lewis in WA.. no more tire roasting goodness till I can get HP Tuners and put E85 back in next summer.

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12-10-2013, 09:56 AM

#7796

574

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Quote:

Originally Posted by ThexGovenor

Sad news guys... Im switching back to pump gas for the time being so I can drive out to Fort Lewis in WA.. no more tire roasting goodness till I can get HP Tuners and put E85 back in next summer.

Damn thats a drive!