Inlet upgrade?
- Thread starter Al's#5
- Start date
- Joined
- Jan 16, 2015
- Messages
- 5,856
Yes , That's the Air temp sensor in the little plastic bottle with holes drilled in it. And the IAC is one of the small filters and the other is the crankcase breather. If it runs good , I will make an attempt at side covers if I don't like the way it looks .
Clive
VIP MEMBER
- Joined
- Jun 9, 2017
- Messages
- 1,169
I have been inspired to try a similar setup and am thinking of a small electronic component heatsink or milling some fins into some diameter alu. and drill/tapping it to take the sensor. Have ordered the K&N filters but not sure if the colour suits the bike so maybe some black alternatives or fabricate side panels - perforated stainless with a new badge or carbon fibre? What size were the small filters? And assume the silicone coupler (30degree?) is 51mm/2" id?
Next is an alu/carbon fibre intake bend....
Next is an alu/carbon fibre intake bend....
Last edited:
- Joined
- Jan 16, 2015
- Messages
- 5,856
That would be very nice , and the small filters were 3/8 " ID flange . You have a variety of ways to do this , I used a push in 3/8 " for the IAC hose and a clamp on 3/8 " for the crankcase breather . Fabricating metal intake tubes would be great to see , but in the end takes a lot of time and effort. If this works out good maybe someone with better skills than me can take this to the next level ? I wish a company like Free Spirits would have made an intake kit for the Norton 961. I have already purchased a 180 degree aluminum tube to form the basis of a metal intake tube , but that is for Phase 2 or Phase 3 . The bottom line for me is the motor needs to run good and with more power !
Last edited:
Clive
VIP MEMBER
- Joined
- Jun 9, 2017
- Messages
- 1,169
Thanks Tony. Seems you can't get 30 degree silicone - 22"/51mm is this correct? - so hoping 45 degree can be bent into position?That would be very nice , and the small filters were 3/8 " ID flange . You have a variety of ways to do this , I used a push in 3/8 " for the IAC hose and a clamp on 3/8 " for the crankcase breather . Fabricating metal intake tubes would be great to see , but in the end takes a lot of time and effort. If this works out good maybe someone with better skills than me can take this to the next level ? I wish a company like Free Spirits would have made an intake kit for the Norton 961. I have already purchased a 180 degree aluminum tube to form the basis of a metal intake tube , but that is for Phase 2 or Phase 3 . The bottom line for me is the motor needs to run good and with more power !
- Joined
- Jan 16, 2015
- Messages
- 5,856
I was able to find both 30 and 45 degree. I am using the 30 degree because it kept the tract a straighter path . And as you can see I can't sleep it's 3:30 am .
- Joined
- Jan 16, 2015
- Messages
- 5,856
OH , I think I understand what you're asking me now. The ID of the intake hoses is 2 in. , or you can try 51 or 52 mm ID . Car speed shops that deal with cold air intakes should have what you need. I went to SILICONE INTAKES here in the USA , they are on the web.
BritTwit
VIP MEMBER
- Joined
- Aug 25, 2009
- Messages
- 4,030
Tony,
the drawing seems to indicate 9.5" from the head to the end of the velocity stack. That would include the length of your throttle body as well.
Is that what your design measures?
And that would of course be for a motor with a 89mm stroke. The 961 has a 79mm stroke.
Are you going to get a Dynotune for the bike when you're finished?
the drawing seems to indicate 9.5" from the head to the end of the velocity stack. That would include the length of your throttle body as well.
Is that what your design measures?
And that would of course be for a motor with a 89mm stroke. The 961 has a 79mm stroke.
Are you going to get a Dynotune for the bike when you're finished?
- Joined
- Jan 16, 2015
- Messages
- 5,856
First open road test : A bit fluffly below 4000 rpm , but once above its off to the races. I can confirm best power to date so far. My usual speed run saw 5th gear 7500 rpm , it would have pulled to the limiter in 5th , I kid not . The only complaint I have is getting some oil spittle out of my makeshift breather. If you ride mostly below 4500 RPM , there is not much here for you . But if you like going faster and revving higher , I think you will be pleased. (That's right folks , 7500 RPM 5th gear !) And time to speed was quickest yet .
Last edited:
- Joined
- Jan 16, 2015
- Messages
- 5,856
During a fuel stop in the middle of the trip .Tony,
Is picture prior to departure to , or after return from road test?
Don't forget to share.
lcrken
VIP MEMBER
- Joined
- Mar 15, 2009
- Messages
- 5,035
And that's with taller than stock gearing, right? So even more significant.First open road test : A bit fluffly below 4000 rpm , but once above its off to the races. I can confirm best power to date so far. My usual speed run saw 5th gear 7500 rpm , it would have pulled to the limiter in 5th , I kid not . The only complaint I have is getting some oil spittle out of my makeshift breather. If you ride mostly below 4500 RPM , there is not much here for you . But if you like going faster and reving higher , I think you will be pleased. (That's right folks , 7500 RPM 5th gear !) And time to speed was quickest yet .
Ken
- Joined
- Jan 16, 2015
- Messages
- 5,856
No Ken , Its stock 18T/50T
lcrken
VIP MEMBER
- Joined
- Mar 15, 2009
- Messages
- 5,035
My mistake, Tony. I thought I remembered you posting a while back about changing the gearing.
Ken
Clive
VIP MEMBER
- Joined
- Jun 9, 2017
- Messages
- 1,169
Sounds really promising! Still want to see dyno figures though. Just waiting for the k&n filters to arrive and planning to use the setup for a track training day in April to help keep up with those pesky sports bikes. Sounds like I need a new catch 'tank' with feed in and breather out.
- Joined
- Jan 16, 2015
- Messages
- 5,856
I switch back and fourth. When I went on my long trips I put a smaller sprocket on the rear 47T.
Similar threads
- Locked
