Anyone running a 2.4 upper and 15% OD?

BIRDDOC

Active Member
Established Member
Joined
Nov 27, 2011
Messages
1,626
Location
Kentucky
@birdoc or you can add long tubes which will likely lower you boost 1 psi making it even safer and you can run upper and 10 lower :burnout:

I dropped my boost slightly less than 1 lbs with the addition of my AR 1 7/8 LT's.

It should help decrease stress on the 5.8 for the long haul and is something great to consider if you increase your boost.

Outside of that they sound awesome :beer: I took another forum member and his wife for a ride this past weekend. Afterwards his wife said he needed to get LT's! LOL!
 
Last edited:

Shhhh

Active Member
Established Member
Joined
Sep 8, 2010
Messages
929
Location
Newnan,GA
I dropped my boost slightly less than 1 lbs with the addition of my AR 1 7/8 LT's.

I should help decrease stress on the 5.8 for the long haul and is something great to consider if you increase your boost.

Outside of that they sound awesome :beer: I took another forum member and his wife for a ride this past weekend. Afterwards his wife said he needed to get LT's! LOL!

I used to have longtubes on my old 2v and I've driven my buddies 4v with longtubes. They always seemed to be over the top on in the loud department. My '13 may see longtubes down the road but not anytime soon.

Ordered with Lethal earlier and already got a shipping code. Thanks for all the info and help guys :beer:
 

gkviper192

New Member
Established Member
Joined
Oct 6, 2011
Messages
518
Location
PA
I currently have a 2.4 upper and have been kicking around the idea of throwing on a lower. I know a few people on here run 10% OD's with a 2.4 upper without a problem on 93. I have been told conflicting things about a 2.4/15% setup and just curious if anyone already is doing this.

Does anyone run a 2.4 Upper and a 15% OD setup?

I wouldn't immediately write off the possibly of running a 15% plus the 2.4 first off I'd try to find a set of 2 inch LTs I'm not sure if anyone makes them yet but id do them if they do. Should drop the boost at least 1lb. Next you could do a couple things to help as well. Run higher than 93 octane (100oct at least like you said you have been) Than you could always add methanol injection to battle the heat because it flat out works. Last of all you could port the blower to increase efficiency and lower boost. I think it can be done with the correct supporting mods.
 

Shhhh

Active Member
Established Member
Joined
Sep 8, 2010
Messages
929
Location
Newnan,GA
I wouldn't immediately write off the possibly of running a 15% plus the 2.4 first off I'd try to find a set of 2 inch LTs I'm not sure if anyone makes them yet but id do them if they do. Should drop the boost at least 1lb. Next you could do a couple things to help as well. Run higher than 93 octane (100oct at least like you said you have been) Than you could always add methanol injection to battle the heat because it flat out works. Last of all you could port the blower to increase efficiency and lower boost. I think it can be done with the correct supporting mods.


Ya I ordered an offroad X pipe and a 15% OD. This car has never seen anything less than 100octane since I picked it up from the dealer June 12th. It also only has 977 miles on it since I never have that much time to drive it hahaha. Wrenching on them is half the fun anyhow.

In the future if I get bored I may pull the blower for porting. A friend of mine has a machine shop and he does nice work.

It'll probably be a good month before I have time to fly back to GA and install the parts and get it retuned. I'll post up #'s and info as soon as it gets finished though :beer:
 
Last edited:

gkviper192

New Member
Established Member
Joined
Oct 6, 2011
Messages
518
Location
PA
Ya I ordered an offroad X pipe and a 15% OD. This car has never seen anything less than 100octane since I picked it up from the dealer June 12th. It also only has 977 miles on it since I never have that much time to drive it hahaha. Wrenching on them is half the fun anyhow.

In the future if I get bored I may pull the blower for porting. A friend of mine has a machine shop and he does nice work.

It'll probably be a good month before I have time to fly back to GA and install the parts and get it retuned. I'll post up #'s and info as soon as it gets finished though :beer:

Edit nvm
 
Last edited:

gkviper192

New Member
Established Member
Joined
Oct 6, 2011
Messages
518
Location
PA
I would not run a 15%+2.4 with only an off road x and 100 octane. You need at LEAST two of the following 3: headers, meth, ported blower.
 

91svtbird

New Member
Established Member
Joined
Nov 20, 2005
Messages
1,341
Location
Ffld, CT
Just for my own clarification; The blower is becoming less efficient past 18K a.k.a. creating more heat per "horsepower". For a lack of a better term?

In your opinion you would only run a stock upper to stay within the efficiency window throughout the entire rpm range?

Yes based on the calculated numbers to keep the blower speed within the TVS compressor map sweet spot that would be correct. That why Ford chose to go with the 2.7 as the smallest pulley they could on the 2013 TVS blower. This would be most important especially for open track use.

That said if you wanted to "push the limits" for street or occasional drag race use and still maintain some margin of safety and relatively cool blower inlet temps then the 10% lower with the stock upper would yield the max blower RPMs with the least belt slippage at that level for the TVS. Like I said earlier to suggest a smaller 2.4 upper along with a 10% lower is simply bad advice for many reasons.

Can it be done? sure but it comes with a price. Not only the added cost $$ of another pulley but at the cost of higher blower inlet temps and increased belt slippage, both of which equal lost HP when you want it the most....repeatable power while under a load shifting through the gears going down the track will be lost.

Just trying to educate here with the facts so you guys can make an informed intelligent decision before you decide what direction to go when choosing the correct combination of parts for your car. At least armed with accurate data one can then make their own decision how far they want to take things past the recommended limits and weigh the risk vs reward they are willing to take. Remember Dyno numbers don't tell the whole story about power but they do help foster sales and chest pumping....
 
Last edited:

Shhhh

Active Member
Established Member
Joined
Sep 8, 2010
Messages
929
Location
Newnan,GA
I would not run a 15%+2.4 with only an off road x and 100 octane. You need at LEAST two of the following 3: headers, meth, ported blower.

Longtubes possibly down the road and a ported blower whenever I have time and get off my ass to yank the stocker off haha. To many horror stories with Meth so I'll pass on that. We'll see how it takes the 15% and 2.4 first. If its not looking good the stock upper will be going back on :beer:
 

Shhhh

Active Member
Established Member
Joined
Sep 8, 2010
Messages
929
Location
Newnan,GA
Yes based on the calculated numbers to keep the blower speed within the TVS compressor map sweet spot that would be correct. That why Ford chose to go with the 2.7 as the smallest pulley they could on the 2013 TVS blower. This would be most important especially for open track use.

That said if you wanted to "push the limits" for street or occasional drag race use and still maintain some margin of safety and relatively cool blower inlet temps then the 10% lower with the stock upper would yield the max blower RPMs and least belt slippage for the TVS. Like I said earlier to suggest a smaller 2.4 upper along with a 10% lower is simply bad advice for many reasons.

Can it be done? sure but it comes with a price. Not only the added cost $$ of another pulley but at the cost of higher blower inlet temps and increased belt slippage, both of which equal lost HP when you want it the most....repeatable power while under a load shifting through the gears going down the track will be lost.

Just trying to educate here with the facts so you guys can make an informed intelligent decision before you decide what direction to go when choosing the correct combination of parts for your car. At least armed with accurate data one can then make their own decision how far they want to take things past the recommended limits and weigh the risk vs reward they are willing to take. Remember Dyno numbers don't tell the whole story about power but they do help foster sales and chest pumping....



I appreciate all the info and help. We'll see how she holds up :beer:
 

gkviper192

New Member
Established Member
Joined
Oct 6, 2011
Messages
518
Location
PA
Longtubes possibly down the road and a ported blower whenever I have time and get off my ass to yank the stocker off haha. To many horror stories with Meth so I'll pass on that. We'll see how it takes the 15% and 2.4 first. If its not looking good the stock upper will be going back on :beer:

IATs are gonna sky rocket causing detonation without at least two of the three. Save the 15 until you are ready to address the heat it will produce.
 

Shhhh

Active Member
Established Member
Joined
Sep 8, 2010
Messages
929
Location
Newnan,GA
IATs are gonna sky rocket causing detonation without at least two of the three. Save the 15 until you are ready to address the heat it will produce.

Another option will be to machine the 15% down to a 10% if it causes too much of a problem. I'll keep everyone posted. It'll be a good month like I said. I havent even driven the car since early December so who knows when I'll get around to wrenching on it.

I know a 10% OD and a 2.4upper are fine with plain jane 93 in the tank.
 
Last edited:

Shhhh

Active Member
Established Member
Joined
Sep 8, 2010
Messages
929
Location
Newnan,GA
700whp is not enough for u ? are u planning to race with somebody?

Nope. I just enjoy playing with cars.
If I was going to race I probably would have just kept my '03 and dumped more money into it. Just wanted something nicer all around and something I can still tinker on.
 
Last edited:

serickson1

sericksonGT500
Established Member
Joined
Aug 18, 2009
Messages
953
Location
scappoose oregon
Both the stock Eaton and TVS can make good power safely past 18,000rpms.....I was told the same thing when I started trying different combinations on my '07. I have over 500 passes on my car running 92 pump gas and methanol injection. I currently hold the mph record on SVT for a factory Eaton at 135 mph. I ended up running a 2.2 upper and 10% lower making 21psi as my final combo before switching to the TVS. I consistently bracket raced the combo for 3 years.....yes it got hot......a 5.5 gal trunk mount tank filled with 30lbs of ice and dual puller fans installed on a first gen. AFCO H/E is all that was needed to turn it into a reliable combo. I have 4.10 gears and trap between 6500-6700rpms.
Although plenty of people will tell you there is an efficiency limit to these blowers I never found it. Every time I installed a smaller pulley it made more power on the dyno and ran consistently faster at the track......not just once....but on back to back to back pulls and passes at the track.
My latest mods include a '13 TVS, '13 I/C, 15% lower, 2.5 upper, CJ mono blade TB, 72lb. injectors, and JLT Super Big Air intake.....tracks don't open up until April.....I'll post up results with the new combo soon:beer:
 

gkviper192

New Member
Established Member
Joined
Oct 6, 2011
Messages
518
Location
PA
What he said ^ like I said. Address the heat issues caused by higher boost and you will push the efficiency range higher and higher.

Put the 2.4 + 15% and it will pull so much timing it will make less power than before. Trying that setup without supporting cooling mods is like asking to pop your motor.
 

Shhhh

Active Member
Established Member
Joined
Sep 8, 2010
Messages
929
Location
Newnan,GA
What he said ^ like I said. Address the heat issues caused by higher boost and you will push the efficiency range higher and higher.

Put the 2.4 + 15% and it will pull so much timing it will make less power than before. Trying that setup without supporting cooling mods is like asking to pop your motor.

Hmmm maybe ill have to machine it down to a 10% then. I know that combo works just fine with no extra cooling mods on 93.
 

BIRDDOC

Active Member
Established Member
Joined
Nov 27, 2011
Messages
1,626
Location
Kentucky
Hmmm maybe ill have to machine it down to a 10% then. I know that combo works just fine with no extra cooling mods on 93.

Just FYI for anybody b/t the 10% OD and 15% OD pulleys.....
You can send either one of them to Innovator West to be converted to the other for much cheaper than buying a new one. Dustin did this with his 10% OD to make it a 15% OD Pulley.
 

Users who are viewing this thread



Top