How far can you push a 96" TC Head
#21
06-30-2019, 07:55 AM
On my 124 build using 110 heads Cycle Rama had them flowing @ 340 cfms and set the compression for 11.8 running there 650 cams and its reached 150 hp so your going to need more flow and raise up the compression and a better exhaust, I built a Fm 117 using DVR heads and a TW999-6 cams along with a 58mm TB running the dyna FM E series exhaust for forum member the MADD GHOST and his numbers are very low for a 117 build, the tuner told him the same that something is holding him back on the power department. the tuner removed the baffle out of the pipe and the bike picked up 10 hp. but its too loud for his liking!
#22
06-30-2019, 08:06 AM
That would confirm my suspects, I had a 107 pushing 120hp (on dyno) and while the 124 feels stronger in the torque dept, it doesn't feel nowhere near like a 150 hp bike would feel.
On the future I'll probably go with a new set of heads and sell mine, go up to 12:1 along with a 62mm TB, the thing about the exhaust is weird since FM themselves run them at 150hp without issues, the thing is I dont know if with or without the baffle, i'll try to remove the baffle and see how the engine reacts to the change.
On the future I'll probably go with a new set of heads and sell mine, go up to 12:1 along with a 62mm TB, the thing about the exhaust is weird since FM themselves run them at 150hp without issues, the thing is I dont know if with or without the baffle, i'll try to remove the baffle and see how the engine reacts to the change.
#23
06-30-2019, 08:14 AM
I am just be honest he had me remove the level B heads and switched to the DVR heads after his first dyno tune session. and even had me switch out his stock compensator to a solid one made by evolution performance and put it back on dyno, then called me back up wanting to switch out cams and try another set of heads from another company. i told him he should try another 2 into 1 exhaust first!
I do run a solid comp since mine lasted less than 1000 miles once I installed the 124 however that won't make any diff (besides the lack of rattling in the primary of course)
#24
06-30-2019, 08:30 AM
Road Warrior
I am just be honest he had me remove the level B heads and switched to the DVR heads after his first dyno tune session. and even had me switch out his stock compensator to a solid one made by evolution performance and put it back on dyno, then called me back up wanting to switch out cams and try another set of heads from another company. i told him he should try another 2 into 1 exhaust first!
Target what did that build finally end up making? And can he put another pipe
on just for a dyno pull experiment?
#25
06-30-2019, 08:52 AM
Road Warrior
If your serious about peak hp look into SPFabrication custom pipes for dyna or Burns. You’ll pay more but these are often used in all out effort builds. Production pipes are very very rarely hitting 150+ especially on non baggers.
#26
06-30-2019, 09:43 AM
#27
06-30-2019, 10:12 AM
Road Warrior
As you know I’ve done multiple 124 builds w no expense spared and been a few shy of 150 on a couple. Hard to do, could I have chosen a higher level head porter?....probably. But seeing I ride em like a grandpa I’m sure I don’t need it haha!
And one build was a 110 head casting, geez man who should I call next....need an outfit that actually sends out flow charts instead of just telling you what it does.
Last edited by ntraindavefl; 06-30-2019 at 10:21 AM.
#28
06-30-2019, 11:45 AM
Will look, money is no issue, want to build an ocasional drag strip bike, plus fast harleys are a VERY RARE thing over here, it's always fun to impress people with a slow and noisy HD.
#29
06-30-2019, 11:57 AM
That's indeed a low number for a 117, I had that power on my 107, was the major thing the exhaust? Because it seems really low
I believe its a combination between the heads and exhaust, i think the madd ghost said the heads have a raised port but only flowed in the 280 range!
Will look, money is no issue, want to build an ocasional drag strip bike, plus fast harleys are a VERY RARE thing over here, it's always fun to impress people with a slow and noisy HD.
I believe its a combination between the heads and exhaust, i think the madd ghost said the heads have a raised port but only flowed in the 280 range!
Will look, money is no issue, want to build an ocasional drag strip bike, plus fast harleys are a VERY RARE thing over here, it's always fun to impress people with a slow and noisy HD.
#30
06-30-2019, 01:12 PM
There must have been a weird thing somewhere, I had DVR raised heads on my old 107 and it was pushing 118 to the ground with the 999-6A cams, and a pro pipe.