Larger Throttle Body
Grand HDF Member
Joined: Feb 2005
Posts: 4,307
Likes: 9,428
From: Twin Cities Minnesota
RE: Larger Throttle Body
Nitrous works fine if the motor is set up for it.
[ul][*]Use forged pistons and not cast.[*]Use crankshaft support. http://www.denniskirk.com/jsp/produc...oductId=p02655[/ul]
A quality kit runs about $1200.00 The Edelbrock kit also has a RPM switch that will not allow engagement below 4200 RPM. This should save accidental engagement. Be conservative, don't go to big on the nitrous shot. The Edelbrock kit is rated at 30 H.P. You can add to stock motor according to Edelbrock, but I wouldn't. Another benefitt is that the motor does not have to be retuned if already tuned on dyno for it will not affect your settings. It's "plug and play".
Steve
When you are putting in your 3:37 gears you can install the crank support at the same time, no extra labor involved to speak of.
[ul][*]Use forged pistons and not cast.[*]Use crankshaft support. http://www.denniskirk.com/jsp/produc...oductId=p02655[/ul]
A quality kit runs about $1200.00 The Edelbrock kit also has a RPM switch that will not allow engagement below 4200 RPM. This should save accidental engagement. Be conservative, don't go to big on the nitrous shot. The Edelbrock kit is rated at 30 H.P. You can add to stock motor according to Edelbrock, but I wouldn't. Another benefitt is that the motor does not have to be retuned if already tuned on dyno for it will not affect your settings. It's "plug and play".
Steve
When you are putting in your 3:37 gears you can install the crank support at the same time, no extra labor involved to speak of.
Banned
Joined: Mar 2006
Posts: 8,603
Likes: 10
RE: Larger Throttle Body
very good kit and advice from HP & Jeep....nitrous will not blow your motor....your greedy azz will tho...theres a window of tune for nitrous just like anything else...what most folks dont understand is it's not as forgiving as they might hope...the edelbrock kit is top notch for bikes....rule of thumb on juice, retard the timing for every 100hp shot by 3deg...run forged pistons with a thick deck and top ring land down at least .250".....have a good bottom end...solder all wires and do not crimp...start with what your kit recommends and read the plugs with each change...then, only change one thing at a time...theres more but whats here will get the novice started
ORIGINAL: jeepster09
Nitrous works fine if the motor is set up for it.
[ul][*]Use forged pistons and not cast.[*]Use crankshaft support. http://www.denniskirk.com/jsp/produc...oductId=p02655[/ul]
A quality kit runs about $1200.00 The Edelbrock kit also has a RPM switch that will not allow engagement below 4200 RPM. This should save accidental engagement. Be conservative, don't go to big on the nitrous shot. The Edelbrock kit is rated at 30 H.P. You can add to stock motor according to Edelbrock, but I wouldn't. Another benefitt is that the motor does not have to be retuned if already tuned on dyno for it will not affect your settings. It's "plug and play".
Steve
When you are putting in your 3:37 gears you can install the crank support at the same time, no extra labor involved to speak of.
Nitrous works fine if the motor is set up for it.
[ul][*]Use forged pistons and not cast.[*]Use crankshaft support. http://www.denniskirk.com/jsp/produc...oductId=p02655[/ul]
A quality kit runs about $1200.00 The Edelbrock kit also has a RPM switch that will not allow engagement below 4200 RPM. This should save accidental engagement. Be conservative, don't go to big on the nitrous shot. The Edelbrock kit is rated at 30 H.P. You can add to stock motor according to Edelbrock, but I wouldn't. Another benefitt is that the motor does not have to be retuned if already tuned on dyno for it will not affect your settings. It's "plug and play".
Steve
When you are putting in your 3:37 gears you can install the crank support at the same time, no extra labor involved to speak of.
Road Master
Joined: Dec 2006
Posts: 1,058
Likes: 6
From: Omaha Nebraska
RE: Larger Throttle Body
ORIGINAL: maineultraclassic
What effect would a larger throttle body have on my current build?
What companies offer a larger throttle body for an '05 touring, at the best bang-4-buck?
Can cruise control still be used with them?
Is a larger throttle body worth it on a mild build like mine?
Lots of questions all at once, and more to come I'm sure.
Steve
What effect would a larger throttle body have on my current build?
What companies offer a larger throttle body for an '05 touring, at the best bang-4-buck?
Can cruise control still be used with them?
Is a larger throttle body worth it on a mild build like mine?
Lots of questions all at once, and more to come I'm sure.
Steve
Another way to look at this, when GM was using dual bladed TBs in Corvettes from 85 - 96, they were each 45mm, if I recall,and were considered more then enough for the 96 330 HP LT4 engine unless radically modified, why would a Harley need a larger one?
Road Master
Joined: Apr 2006
Posts: 892
Likes: 0
From:
RE: Larger Throttle Body
Steve, I checked around about a bigger TB when I was researching for my build & came to the same conclusion you have. Looks like you're just gonna have to bite the bullet & go all out w/the HQ 98" build that Phil has. Then you'llbe able to make use of a new TB. 
VicW.
VicW.
Stage I
Joined: Jan 2007
Posts: 1
Likes: 0
RE: Larger Throttle Body
I went with a Zippers 54mm Thundermax TB & manifold for my 124 TC-B build. Course I'm using the S&S 124" Hotkit with 640 lift cams and Super Stock heads. Looking into a NOS systembecause I'm a firm believer that there's no kill like overkill!
Thread Starter
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Elite HDF Member
Joined: Mar 2006
Posts: 4,722
Likes: 5
From: Biddeford, Maine
RE: Larger Throttle Body
I'm still curious if the SE 50mm throttle body would work for me or not.
If I find one at a very good deal..............it will be installed and tested in the spring.
Steve
If I find one at a very good deal..............it will be installed and tested in the spring.
Steve
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Ultimate HDF Member
Joined: Feb 2006
Posts: 5,939
Likes: 3
From: TX
RE: Larger Throttle Body
Hey Steve... I think that S/E 50mm is for 06 & later bikes. It is not easily adaptable to pre-06 bikes as all the sensors are different. Could be wrong, or there could be another one I have not found.... but what I've seen is not a match.
Want more... here ya go: http://www.bcheads.com/fuel.htm
Want more... here ya go: http://www.bcheads.com/fuel.htm
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