FAQ: TVS/Harrop-lsj1320 & You
07-14-2009, 05:39 PM
#201
07-21-2009, 09:28 AM
#214
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There have been a few TVS threads lately and someone asked for a FAQ on the TVS/Harrop-lsj1320, but the thread is going in a diff direction because of random bantering.
For a start:
Required Bare Minimum:
60# Injectors
Tune
HIGHLY Recommended: Basically required for any decent numbers
Intake
-or-
3" Intake
Header
3" dp
3" exhaust
Any combination of: Dual Pass (+/- Opt B), H/E, Meth
Clutch
Solid Motor/Tranny Mounts
-or-
Rotated Tranny Mounts
Return-style Fuel System for smaller than the "stock" 80mm pulley
-or-
larger injectors (72#)
Good extras
LS4 Throttle Body - if you can get used to the uber touchy throttle
Internals
Head port/polish
Upgraded Valvetrain
Vendors of the TVS/Harrop-lsj1320
OTTPerformance
Intense Racing
WickedSS2005's Personal Experience
My initial setup was the bare minimum. My last dyno was 318/288 @ 7,395rpm w/ afr of 11.9 and 17* timing @ 69*F w/ 48% humidity; and was still on the way up. Stock air box mod, pacesetter header, 3" catless dp, 3" custom exhaust, secondary cobra h/e, no meth. IAT2's topped at 133*F after the third pull. My 2.6/60's setup hit 160+ IAT2's after multiple runs and dyno'd in at 258/239.
Questions
The TVS is designed for maximum performance and a direct statement from HARROP itself states: "Porting the HTV1320 can and will decrease performance and void warranty. Through extensive testing it has been designed to be the most effective directly from the manufacturer"
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
Yes, the 2.5" intakes will work with the TVS. It's more of a matter of what Throttle Body you are running and use a coupler to make up the difference from the K&N to an LS4 throttle body.
Personally, I'm still on stock air box mod
There's a how-to on here. It varies slightly from a how-to to swapping pullies on the M62. Only diff is you need to make a modification to the MAP sensor and angle it to fit beneath the housing of the TVS and adjust your oil dipstick. Piece of cake.
My final numbers were 318hp/282tq. My mods were as follows: airbox mod, stock tb, 60# injectors, stock endplate and manifold, cobra h/e in-series with stock h/e, 90% distilled water/10% coolant w/ bottle of water wetter in the f/i cooling system, stock head, stock internals, 1.75" primary pacesetter header, custom 3" catless dp, custom 3" exhaust, stock clutch, stock axles, TTR motor/trans mounts. Best 1/4 mile was 13.1@110. 60' was 2.4 seconds.
For a start:
Required Bare Minimum:
60# Injectors
Tune
HIGHLY Recommended: Basically required for any decent numbers
Intake
-or-
3" Intake
Header
3" dp
3" exhaust
Any combination of: Dual Pass (+/- Opt B), H/E, Meth
Clutch
Solid Motor/Tranny Mounts
-or-
Rotated Tranny Mounts
Return-style Fuel System for smaller than the "stock" 80mm pulley
-or-
larger injectors (72#)
Good extras
LS4 Throttle Body - if you can get used to the uber touchy throttle
Internals
Head port/polish
Upgraded Valvetrain
Vendors of the TVS/Harrop-lsj1320
OTTPerformance
Intense Racing
WickedSS2005's Personal Experience
My initial setup was the bare minimum. My last dyno was 318/288 @ 7,395rpm w/ afr of 11.9 and 17* timing @ 69*F w/ 48% humidity; and was still on the way up. Stock air box mod, pacesetter header, 3" catless dp, 3" custom exhaust, secondary cobra h/e, no meth. IAT2's topped at 133*F after the third pull. My 2.6/60's setup hit 160+ IAT2's after multiple runs and dyno'd in at 258/239.
Questions
The TVS is designed for maximum performance and a direct statement from HARROP itself states: "Porting the HTV1320 can and will decrease performance and void warranty. Through extensive testing it has been designed to be the most effective directly from the manufacturer"
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
Yes, the 2.5" intakes will work with the TVS. It's more of a matter of what Throttle Body you are running and use a coupler to make up the difference from the K&N to an LS4 throttle body.
Personally, I'm still on stock air box mod
There's a how-to on here. It varies slightly from a how-to to swapping pullies on the M62. Only diff is you need to make a modification to the MAP sensor and angle it to fit beneath the housing of the TVS and adjust your oil dipstick. Piece of cake.
My final numbers were 318hp/282tq. My mods were as follows: airbox mod, stock tb, 60# injectors, stock endplate and manifold, cobra h/e in-series with stock h/e, 90% distilled water/10% coolant w/ bottle of water wetter in the f/i cooling system, stock head, stock internals, 1.75" primary pacesetter header, custom 3" catless dp, custom 3" exhaust, stock clutch, stock axles, TTR motor/trans mounts. Best 1/4 mile was 13.1@110. 60' was 2.4 seconds.
03-21-2011, 10:25 PM
#220
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I'm getting super interested in the TVS, but don't want to deal with meth. I have a large HE, dual pass/option B with 60's and currently a 2.8 on my M62. I'm looking for right around 300whp on my DD. Feasible? I've been searching around and came up with different answers.
Joel
Joel
03-21-2011, 10:43 PM
#221
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easily feasible. it's possible on the stock tvs pulley depending on your other mods, but most people run conservative and don't quite get there. the tvs does not NEED meth or e85 to run, although it is recommended to get the most out of it.
03-21-2011, 10:56 PM
#222
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Hmm, thats gaining my interest even more then. I'd LOVE to do E85 but its nonexistent in Canada to the public. Who tunes most of you guys? or are you self tuned?
Joel
Joel
03-21-2011, 11:09 PM
#223
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i tune myself, and i think most tvs'ers do. there's a lot to know but if i can learn it...
octane is what makes the tvs really shine, especially if you have supporting mods and smaller pulleys. if you don't have access to e85, then meth might be for you. do NOT do the washer fluid thing, do it the right way and definitely tune for it
octane is what makes the tvs really shine, especially if you have supporting mods and smaller pulleys. if you don't have access to e85, then meth might be for you. do NOT do the washer fluid thing, do it the right way and definitely tune for it
03-21-2011, 11:35 PM
#224
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i tune myself, and i think most tvs'ers do. there's a lot to know but if i can learn it...
octane is what makes the tvs really shine, especially if you have supporting mods and smaller pulleys. if you don't have access to e85, then meth might be for you. do NOT do the washer fluid thing, do it the right way and definitely tune for it
octane is what makes the tvs really shine, especially if you have supporting mods and smaller pulleys. if you don't have access to e85, then meth might be for you. do NOT do the washer fluid thing, do it the right way and definitely tune for it
I've just heard some horror stories about a pump dying or a line clogging, and that'll take my engine out. (I know, pay to play. But if I can attain 300HP without meth I'd be really happy).
I already have 60's, ZZP intake, Dual Pass, Option B, ZZP Stage 3 HE, Shorter Belt and dual interceptors. What else would you reccomend for a set-up? Would running meth (since it is a really cheap mod when you look at it) make that massive of a difference? Sorry for the noob TVS q's. I find the search on this forum to be brutal.
Joel
03-21-2011, 11:55 PM
#225
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that would definitely get you started. i would look at getting exhaust work done, and depending on your IDC's, possibly upgrading your injectors. if you are shooting meth, then you can stretch the IDC's a bit further
meth itself does not give you power, however, tuning for it does. you can advance timing, a lot - and it is said that for every 1 degree of timing, you can expect 4-5 horsepower. so, if you can push 16 deg max on pump gas, no meth, then with meth you might be able to advance another 8 degrees or so, making 23 deg. those extra 8 degrees might get you 30 hp.
again, this is just throwing numbers out there, you would need tuned to be safe, and keep an eye on the meth so it doesn't run out
meth itself does not give you power, however, tuning for it does. you can advance timing, a lot - and it is said that for every 1 degree of timing, you can expect 4-5 horsepower. so, if you can push 16 deg max on pump gas, no meth, then with meth you might be able to advance another 8 degrees or so, making 23 deg. those extra 8 degrees might get you 30 hp.
again, this is just throwing numbers out there, you would need tuned to be safe, and keep an eye on the meth so it doesn't run out