Torque comparison
Thread Starter
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Tourer
Joined: Jun 2011
Posts: 417
Likes: 3
From: Watauga, TX
Torque comparison
I had a 2008 FLHTCU w/103" se255's rinehart TD's SE intake and SERT. It dyno'd 85hp and 98 fp torque.
Now I have a 2012 FLHTCUTG w/103" stock cams, V&H power headpipe , RC components 4" mufflers and SE heavy breather intake.
If the 2008 weighed 1320 lb with me and the wife fully loaded and it made 98 fp. and the 2012 Tri weighed 1570 lb with me and the wife fully loaded, does the 2012 TRI have to make 116 fp torque to pull as well as the 2008?
I think mathematically it does but I don't know how the 30tooth front/70 tooth rear sprocket on the 2012 TRI vs the 32tooth front/68 tooth rear sprocket on the 2008 impacts things.
Thanks
Now I have a 2012 FLHTCUTG w/103" stock cams, V&H power headpipe , RC components 4" mufflers and SE heavy breather intake.
If the 2008 weighed 1320 lb with me and the wife fully loaded and it made 98 fp. and the 2012 Tri weighed 1570 lb with me and the wife fully loaded, does the 2012 TRI have to make 116 fp torque to pull as well as the 2008?
I think mathematically it does but I don't know how the 30tooth front/70 tooth rear sprocket on the 2012 TRI vs the 32tooth front/68 tooth rear sprocket on the 2008 impacts things.
Thanks
Last edited by Moneywoes; Apr 13, 2013 at 08:38 PM.
Thread Starter
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Tourer
Joined: Jun 2011
Posts: 417
Likes: 3
From: Watauga, TX
Well I'd like to have an idea what it would pull like after engine work before I do it. I don't need the fastest TRI around, but it could use some help from where its at. I don't want to do more than what i need to, but don't want to have to do things twice either.
I've talked to a builder that suggest a genisis 577 cam, .030 headgasket, deck the heads to bring CR to 10:1-10:2 and tune with TTS. He says this is about a 95hp 110torque set up on a 103" FLH. Can't dyno the TRI, so he'd have to tune off off the laptop and data logging while riding it.
Would a setup that produced 95hp and 110 torque on a FLH with a 32/68 final produce more torque on a TRI with a 30/70 final?
I don't care about the HP, thats to high in the power band. His genisis 577 cam is 100+ at 23-2400, thats usable where you need it on a TRI.
I've talked to a builder that suggest a genisis 577 cam, .030 headgasket, deck the heads to bring CR to 10:1-10:2 and tune with TTS. He says this is about a 95hp 110torque set up on a 103" FLH. Can't dyno the TRI, so he'd have to tune off off the laptop and data logging while riding it.
Would a setup that produced 95hp and 110 torque on a FLH with a 32/68 final produce more torque on a TRI with a 30/70 final?
I don't care about the HP, thats to high in the power band. His genisis 577 cam is 100+ at 23-2400, thats usable where you need it on a TRI.
Last edited by Moneywoes; Apr 13, 2013 at 08:37 PM.
Road Warrior
Joined: May 2008
Posts: 1,513
Likes: 6
From: SC
Well I'd like to have an idea what it would pull like after engine work before I do it. I don't need the fastest TRI around, but it could use some help from where its at. I don't want to do more than what i need to, but don't want to have to do things twice either.
I've talked to a builder that suggest a genisis 577 cam, .030 headgasket, deck the heads to bring CR to 10:1-10:2 and tune with TTS. He says this is about a 95hp 110torque set up on a 103" FLH. Can't dyno the TRI, so he'd have to tune off off the laptop and data logging while riding it.
Would a setup that produced 95hp and 110 torque on a FLH with a 32/68 final produce more torque on a TRI with a 30/70 final?
I don't care about the HP, thats to high in the power band. His genisis 577 cam is 100+ at 23-2400, thats usable where you need it on a TRI.
I've talked to a builder that suggest a genisis 577 cam, .030 headgasket, deck the heads to bring CR to 10:1-10:2 and tune with TTS. He says this is about a 95hp 110torque set up on a 103" FLH. Can't dyno the TRI, so he'd have to tune off off the laptop and data logging while riding it.
Would a setup that produced 95hp and 110 torque on a FLH with a 32/68 final produce more torque on a TRI with a 30/70 final?
I don't care about the HP, thats to high in the power band. His genisis 577 cam is 100+ at 23-2400, thats usable where you need it on a TRI.
You obviously spoke with Steve @ GMR about his cams. Steve is very good at what he does and his Genesis 577 cam is a winner. Without your trike on a dyno you wont see what your final output will be.
I had a 117" in my trike and it dyno'ed at 115ft lbs of torque from 2500 to 4500 rpms. This was with a Wood TW7h cams and compression set at 10.25. I could pull out and pass at will in 6th gear.
Now Im building a 124" that should pull like a bigger freight train
Thread Starter
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Tourer
Joined: Jun 2011
Posts: 417
Likes: 3
From: Watauga, TX
"Without your trike on a dyno you wont see what your final output will be."
This I understand. I don't really care what the numbers are for numbers sake, but I would like the TRI to pull at least as well as the 103" 255's, SERT Rinehart TD's SE intake 32/68 pulley set in the 2008 FLHTCU did.
Just don't know if adding the TTS, Genisis 577's and setting CR to 10.2:1 to the current V&H power duals/RC components 4" mufflers, SE heavy breather will do it.
"I had a 117" in my trike and it dyno'ed at 115ft lbs of torque from 2500 to 4500 rpms. This was with a Wood TW7h cams and compression set at 10.25. I could pull out and pass at will in 6th gear.
Now Im building a 124" that should pull like a bigger freight train"
You don't mess around do ya....
Yes, Steves new shop in Fort Worth is only about 15 or so miles from me.
Thanks
This I understand. I don't really care what the numbers are for numbers sake, but I would like the TRI to pull at least as well as the 103" 255's, SERT Rinehart TD's SE intake 32/68 pulley set in the 2008 FLHTCU did.
Just don't know if adding the TTS, Genisis 577's and setting CR to 10.2:1 to the current V&H power duals/RC components 4" mufflers, SE heavy breather will do it.
"I had a 117" in my trike and it dyno'ed at 115ft lbs of torque from 2500 to 4500 rpms. This was with a Wood TW7h cams and compression set at 10.25. I could pull out and pass at will in 6th gear.
Now Im building a 124" that should pull like a bigger freight train"
You don't mess around do ya....
Yes, Steves new shop in Fort Worth is only about 15 or so miles from me.
Thanks
Last edited by Moneywoes; Apr 13, 2013 at 09:46 PM.
Road Warrior
Joined: May 2008
Posts: 1,513
Likes: 6
From: SC
For the first year I rode my trike it was a 103 with 255 cams and ported heads. It wouldnt keep up with my buddies on the highway going up mountain grades without having to drop at least one gear. This really was disappointing but it was a lesson learned.
After my flywheels went south I wanted to build a engine with more torque. I stepped up to a 117" with the same stroke but bigger bore. Definitely way more pulling power. 2 years later I developed piston slap due to poor cylinder bore from the manufacture.
So now Im building a bigger engine to get more torque so I can roll with my buddies in any situation.
" More torque to haul the pork!! " LOL
After my flywheels went south I wanted to build a engine with more torque. I stepped up to a 117" with the same stroke but bigger bore. Definitely way more pulling power. 2 years later I developed piston slap due to poor cylinder bore from the manufacture.
So now Im building a bigger engine to get more torque so I can roll with my buddies in any situation.
" More torque to haul the pork!! " LOL
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Thread Starter
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Tourer
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From: Watauga, TX
Now they will leave you at the pumps.. LOL
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Joined: Nov 2005
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From: NE Ohio
Naw, big engines tuned correctly get good fuel mileage, they require less throttle opening to do the same work as a less powerfull engine. The 120 in my 06 Ultra will do 41 mpg.
Road Warrior
Joined: May 2008
Posts: 1,513
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From: SC
My 117" in my trike averaged the same fuel mileage as most Triglides.