FAQ Register Login |
Turning 57mm TB to 59mm |
Post Reply |
Author | |
JJW
Premium Member Joined: 26 Dec 2020 Location: Exeter Status: Offline Points: 171 |
Post Options
Thanks(0)
Posted: 15 Feb 2021 at 19:18 |
Not sure if this picture will upload ok but in the process of taking out the 57mm TB I found an imperfection in the alloy.
Spot of weld and we push on... Nothing is easy - ever.... |
|
wigginsjp
Premium Member Joined: 11 Feb 2008 Location: calne Status: Offline Points: 3460 |
Post Options
Thanks(0)
|
Interesting to see your progress on this.
Have you established 59’s over 60’s are better? I’ve not seen results for either but I’d considered larger on my big bore Gen2 before
|
|
Aprilia RSVR Factory 2007 V2 1060cc Big Bore
Aprilia RSVR Factory 2004 Race Bike Kawasaki ZX10R 2007 Race Bike Aprilia Tuono V4 1100 Factory 2020 www.apriliaperformance.co.uk www.apworkshops.co.uk |
|
redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
Post Options
Thanks(0)
|
only good on something like an 1103 or 1127cc lump
check out amaurai son af1 he has tested them no gains i had a set of 59 and 60’s ready for mine and dog76’s 1127’s we were seriously thinking off getting built until the price jumped to silly money |
|
www.apriliaperformance.co.uk www.apriliaforum.co.uk www.apriliaownersclub.co.uk |
|
426hemi
Premium Member owner of the big bore! Joined: 30 Mar 2012 Location: cannock Status: Offline Points: 5676 |
Post Options
Thanks(0)
|
Mine is 1103 with 57’s and you can over fuel the bike with them, probably only real advantage would be extra air flow but there’s only so much air you can get in without forced induction.
|
|
JJW
Premium Member Joined: 26 Dec 2020 Location: Exeter Status: Offline Points: 171 |
Post Options
Thanks(0)
|
So, here’s the TB before it’s patch.
If I’m honest, it’s not too uncommon with Aprilia TB’s, quality isn’t even close to that of the Japanese I’m afraid to say. As far as performance goes, everyone gets different results but I can say this is at the far end of diminishing gains. I can’t see how I could go past 59mm without destroying the body - can’t sleeve it either, just not viable. |
|
redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
Post Options
Thanks(0)
|
that was the air bleed hole was it ?
|
|
www.apriliaperformance.co.uk www.apriliaforum.co.uk www.apriliaownersclub.co.uk |
|
JimmyV4
Moto GP Alien Joined: 07 Aug 2018 Location: Ipswich Status: Offline Points: 896 |
Post Options
Thanks(0)
|
whats your plan with the bike after all of theese mods, are you going to be tracking it.
|
|
JJW
Premium Member Joined: 26 Dec 2020 Location: Exeter Status: Offline Points: 171 |
Post Options
Thanks(0)
|
It’s no bleed,
It’s a bleeding cast imperfection - it goes nowhere. I’m too old for tracks, this is a fast road engine build for a Mille R. Much intel gathered from Gabro - he hasn’t missed a beat yet but I do like to find out for myself..
|
|
dog78
Premium Member Joined: 18 Jan 2015 Location: Winchester UK Status: Offline Points: 1508 |
Post Options
Thanks(0)
|
|
|
redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
Post Options
Thanks(0)
|
have you got any money left ??
|
|
www.apriliaperformance.co.uk www.apriliaforum.co.uk www.apriliaownersclub.co.uk |
|
dog78
Premium Member Joined: 18 Jan 2015 Location: Winchester UK Status: Offline Points: 1508 |
Post Options
Thanks(0)
|
Not much Mark, hadn't realised the car was out of tax £, so taxed that today.
My biggest problem is my shoulder and, and hip now with osteoporosis waiting for an injection, feel like something out of the fugitive one arm man£😂. I am not due in Almeria till the end of October, I knew that the Aprilia would never get its money back not even close, but the R1 has become the same now. Both are enough bike for me now Mark, I am a self taught Google Doctor now😂. I put my own shoulder back in, the pain was was unbelievable but i can almost sleep on it now. I didn't take this long to to recover when i was crashed at clearways, but forty years make a difference, just will have to hope for the best Mark. Hope you're all well and keeping safe👍 |
|
JJW
Premium Member Joined: 26 Dec 2020 Location: Exeter Status: Offline Points: 171 |
Post Options
Thanks(0)
|
At last, the finished article beside a 51mm TB
This one worked out really nicely but blending the throttle tract took time. This is where a lot of people go wrong as there’s huge potential for creating a dip in velocity at the butterfly and injector if you get it wrong. Nice! |
|
Post Reply | |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |