‘06 vs ‘99 TC Heads
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Road Warrior
Joined: Jul 2011
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From: Central TX
‘06 vs ‘99 TC Heads
Thinking of upgrading heads from current mild street port to better flowing Stage 2 or better heads. Will probably sell current heads locally, so looking for a set of take-off heads to have ported. Is there any difference between early and later TC heads? Can a ‘14 touring head be used on ‘PO softail? I thought They were all interchangeable, but remembered reading somewhere that newer heads had different intake setup where TB manifold mounts. Will ‘01 TB manifold fit the newer heads?
I am also thinking about getting a slightly bigger TB, but cost of HPI models are a little steep. Was looking at some 50 mm SE TB’s, but not sure if sensors from 2001 softail will be compatible with the TB’s listed for ‘06 and later TC. Other than TBW models, are TB’s compatible with all cable TC’s?
Thanks for all help.
I am also thinking about getting a slightly bigger TB, but cost of HPI models are a little steep. Was looking at some 50 mm SE TB’s, but not sure if sensors from 2001 softail will be compatible with the TB’s listed for ‘06 and later TC. Other than TBW models, are TB’s compatible with all cable TC’s?
Thanks for all help.
Last edited by txphatboy; Jan 5, 2020 at 11:11 AM.
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
Thinking of upgrading heads from current mild street port to better flowing Stage 2 or better heads. Will probably sell current heads locally, so looking for a set of take-off heads to have ported. Is there any difference between early and later TC heads? I thought either could be used, remembered reading somewhere that newer heads had different intake setup where TB manifold mounts.
i am also thinking about getting a slightly bigger TB, but cost of HPI models are a little steep. Was looking at some 50 mm SE TB’s, but not sure if sensors from 2001 softail will be compatible with the TB’s listed for ‘06 and later TC. Other than TBW models, are TB’s compatible with all cable TC’s?
Thanks for all help.
i am also thinking about getting a slightly bigger TB, but cost of HPI models are a little steep. Was looking at some 50 mm SE TB’s, but not sure if sensors from 2001 softail will be compatible with the TB’s listed for ‘06 and later TC. Other than TBW models, are TB’s compatible with all cable TC’s?
Thanks for all help.
Anyway, jif you are going to have the heads ported, it doesn't matter whether they are early or later unless you prefer the 7mm valves and the beehive springs. If that is your preference, you will need '05 or later heads. If you use '06 up heads you will need intake flanges.
The sensors for the later T/Bs are different but Zippers offers a conversion kit to make them compatible. Have you considered having your T/B bored? About half the price of an HPI piece. IIRC, the '01 T/B is 44mm and a two piece unit but can only be bored to 46mm, not sure if that is going to be a big enough step for you. The SE 50mm T/B (27623-05A is actually not a bad piece of hardware, cable operated and not a bad deal for about $350. You will need the sensor conversion kit from Zippers and a proper crimping tool and a different air cleaner. Also have the intake ports matched to the T/B and I suppose a new intake manifold.
Last edited by djl; Jan 5, 2020 at 11:55 AM.
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Road Warrior
Joined: Jul 2011
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From: Central TX
Yessir - 2001 Fatboy. My 44mm TB was bored to 48 by Dan Vance years ago, but I have had several head porters tell me to get a bigger TB. Not sure what the 48 flows? Vance also did some epoxy work to increase velocity.
I think the SE 50mm TB is a single piece that includes manifold, but not sure. I may hold off at this point - sounds like more involved than I was hoping for. You mentioned needing a new air intake backing plate. I have never noticed any of the air intakes specific to different year model TC’s
I think the SE 50mm TB is a single piece that includes manifold, but not sure. I may hold off at this point - sounds like more involved than I was hoping for. You mentioned needing a new air intake backing plate. I have never noticed any of the air intakes specific to different year model TC’s
HDF Community Team
Joined: Jun 2006
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From: san antonio
Yessir - 2001 Fatboy. My 44mm TB was bored to 48 by Dan Vance years ago, but I have had several head porters tell me to get a bigger TB. Not sure what the 48 flows? Vance also did some epoxy work to increase velocity.
I think the SE 50mm TB is a single piece that includes manifold, but not sure. I may hold off at this point - sounds like more involved than I was hoping for. You mentioned needing a new air intake backing plate. I have never noticed any of the air intakes specific to different year model TC’s
I think the SE 50mm TB is a single piece that includes manifold, but not sure. I may hold off at this point - sounds like more involved than I was hoping for. You mentioned needing a new air intake backing plate. I have never noticed any of the air intakes specific to different year model TC’s
If this was a 2001 TB, it was 40mm not 44. People mistakenly measured it at the air cleaner surface, not the bore/butterfly. A 2001 cannot be bored to 48mm at the butterfly.
If it was a 2006 or later one piece, it was a 46mm bore at the butterfly, and the SE was 50mm.
If it was a 2006 or later one piece, it was a 46mm bore at the butterfly, and the SE was 50mm.
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Road Warrior
Joined: Jul 2011
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From: Central TX
One last thought here - thinking of finding a used HD 46mm throttle body and bore 50mm and matching ports. Are the 43 and 46mm TB’s interchangeable as far as all sensors, injectors, etc? I already have higher flow matched injectors from Marren, but want to make sure I can use them and all sensors, of if any adapters are needed.
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HDF Community Team
Joined: Jun 2006
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From: san antonio
One last thought here - thinking of finding a used HD 46mm throttle body and bore 50mm and matching ports. Are the 43 and 46mm TB’s interchangeable as far as all sensors, injectors, etc? I already have higher flow matched injectors from Marren, but want to make sure I can use them and all sensors, of if any adapters are needed.