<a href="http://www.cv-performance.com/" target="_blank"><img src="http://cvperformance.com/content/cvperformance_345_horiz.gif"></a><br><br> <strong style="font-size: 12px; color:#c00;">Please post your tech support messages for CV Performance in one of the <a href="./forum/cv-performance/" style="font-size: 12px; color:#c00; text-decoration:underline;">3 categories</a>.</strong> Tue, 21 Jul 2026 08:58:12 +0000 Tue, 21 Jul 2026 08:58:12 +0000 Bike Talk motorcycle forum http://bike-talk.com/forum/cv-performance/ Thu, 09 Jun 2022 05:48:44 +0000 http://bike-talk.com/threads/rebuild-kit-needed-for-cv-40-mm-p-n-27932-99.22070/ http://bike-talk.com/threads/rebuild-kit-needed-for-cv-40-mm-p-n-27932-99.22070/ Buell Beast Buell Beast 1 Wed, 23 Jun 2021 17:51:35 +0000 http://bike-talk.com/threads/cv-performance-web-site.22042/ http://bike-talk.com/threads/cv-performance-web-site.22042/ Jacob McIntyre Jacob McIntyre 1 Thu, 03 Jun 2021 05:28:24 +0000 http://bike-talk.com/threads/sipping-to-canada.22039/ http://bike-talk.com/threads/sipping-to-canada.22039/ xcaret xcaret
Sipping to Canada]]> 1 Sun, 23 May 2021 18:58:48 +0000 http://bike-talk.com/threads/velocity-needle-for-sportster.22037/ http://bike-talk.com/threads/velocity-needle-for-sportster.22037/ BigRed96 BigRed96 1 Sat, 15 May 2021 19:43:28 +0000 http://bike-talk.com/threads/which-one.22033/ http://bike-talk.com/threads/which-one.22033/ bsheil1 bsheil1 Mon, 05 Apr 2021 17:46:15 +0000 http://bike-talk.com/threads/tc-88-cv-carb-spitting-gas-back-to-filter-and-jets-question.22021/ http://bike-talk.com/threads/tc-88-cv-carb-spitting-gas-back-to-filter-and-jets-question.22021/ aaron_catrina aaron_catrina
I have a '02 FXDX which I just installed a Thunderheader 2 into 1 exhaust onto as well as a Roland Sands Clarity filter which uses an exposed K&N filter. I purchased one of the premium kits and installed all the parts. (Spring, EZ screw, idle screw, etc). I used the 48 and 195 jets and have tuned the carb correctly I believe. Are these the rights jets to use for this setup? The EZ screw is sitting a little past 3 turns out if I remember right. I got to the point where the carb...

TC 88 CV carb spitting gas back to filter and jets question.]]> 3 Thu, 04 Mar 2021 16:43:33 +0000 http://bike-talk.com/threads/cv44-or-hsr42.22016/ http://bike-talk.com/threads/cv44-or-hsr42.22016/ Donald Derby Donald Derby
Currently have a 2001 fxst. Started life with a cv40 and basically stock. It now is a 97" with S&S 585 cams 10.75:1 comp and the heads were matched at 82cc combustion chambers. It runs good with its HSR42 that is currently on it and dynos at 103 ftlbs and 88 hp with a sae smoothing of 5 however i think there is more on the table because it goes hella fat at 3k (10:1) and at 1800(11:1) but other wise hangs out around 12.5-13.5. I was thinking about swapping to a cv44 i...

CV44 Or HSR42]]> 1 Tue, 21 Jul 2020 22:05:19 +0000 http://bike-talk.com/threads/cv-40-main-jet-identification.21989/ http://bike-talk.com/threads/cv-40-main-jet-identification.21989/ Mark Rosko Mark Rosko I have a 04 Sportster with a main jet that is different to other CV 40 jets. Left is a jet from CV Perf (fits in my 05 Sportster) and on the right is a jet from a 04 Sportster that has a smaller thread. Both carbs are HD but not 100% equal.

View attachment 10700 Does anyone know what type of main jet this is and where I can get one?]]> Tue, 12 May 2020 19:27:58 +0000 http://bike-talk.com/threads/cv-carb-s-s-manifold.21977/ http://bike-talk.com/threads/cv-carb-s-s-manifold.21977/ Madsen69 Madsen69 I am installing a CV carb,with a Press on type flange, on my 1340 shovelhead. And would like some advise
1. At the moment it is mounted to a S&S manifold, Will the difference in diameter between cv carb and manifold be a problem ( disturbe the flow ) should i get a OEM style bendix / keihin type manifold where the diameter matches the cv carb better.
2. Do you recommend using a heat insulator between the carb and manifold
3. The carb has the pre 92 float type, Can this float...

Cv carb S&S manifold]]> Tue, 28 Apr 2020 23:18:28 +0000 http://bike-talk.com/threads/2002-sportster-1200-emulsion-tube.21975/ http://bike-talk.com/threads/2002-sportster-1200-emulsion-tube.21975/ Garry Garry Is that normal?
Has 2 rows of 6, top 2 on opposite sides are open, 2 rows of 2, none open.
I've tried to open them up with my K&L cleaning rods.
Thx]]> 2 Mon, 27 Apr 2020 23:37:25 +0000 http://bike-talk.com/threads/2006-883r-jetting.21974/ http://bike-talk.com/threads/2006-883r-jetting.21974/ Laszlo Laposa Laszlo Laposa Reusable Air Filter - 1011-1067 by dennis kirk.Any good advices ,help ,ideas for a proper jetting and tuning ]]> 4 Wed, 25 Sep 2019 15:43:26 +0000 http://bike-talk.com/threads/cv-carb-for-900-xlch.21931/ http://bike-talk.com/threads/cv-carb-for-900-xlch.21931/ CV4Kickers CV4Kickers
As an introduction, I started riding mini bikes and dirt bikes when I was a kid. My first homemade 'street bike' was a '71 Suzuki Savage 250 2 stroke enduro I put street tires on and geared higher for street use. Later I bought a 2 stroke Yamaha RD 350. The next was a '55 rigid frame panhead that I built from a $800 basket case. Later I built a '67...

CV Carb For 900 XLCH]]> Tue, 22 Jan 2019 00:19:44 +0000 http://bike-talk.com/threads/06-harley-sportster-1200l-help.21830/ http://bike-talk.com/threads/06-harley-sportster-1200l-help.21830/ DieselDom DieselDom
06 Harley sportster 1200L Help]]> 1 Tue, 21 Aug 2018 04:57:13 +0000 http://bike-talk.com/threads/new-cv-performance-slide-drill-or-no-drill.21829/ http://bike-talk.com/threads/new-cv-performance-slide-drill-or-no-drill.21829/ ChrisR ChrisR
New CV Performance Slide..drill or no drill]]> 1 Fri, 18 May 2018 16:38:36 +0000 http://bike-talk.com/threads/cv-jets-size-on-96-shovel.21805/ http://bike-talk.com/threads/cv-jets-size-on-96-shovel.21805/ vince 96" shovel vince 96" shovel I live sea level and exhaust is true dual 31,5" fishtail muffler
greeting from Brittany France]]> 1 Thu, 15 Feb 2018 01:15:45 +0000 http://bike-talk.com/threads/cv40-intake-bolt-thread-pattern.21782/ http://bike-talk.com/threads/cv40-intake-bolt-thread-pattern.21782/ Willus772 Willus772 Tue, 06 Feb 2018 13:13:17 +0000 http://bike-talk.com/threads/accelerator-jet-is-clogged-can-it-be-removed.21780/ http://bike-talk.com/threads/accelerator-jet-is-clogged-can-it-be-removed.21780/ 99DWG 99DWG
Accelerator jet is clogged, can it be removed?]]> 2 Tue, 19 Dec 2017 18:28:29 +0000 http://bike-talk.com/threads/lean-condition-above-75mph-crusing.21773/ http://bike-talk.com/threads/lean-condition-above-75mph-crusing.21773/ awoz87 awoz87
I have the CVP needle installed, lighter spring, 180 main and 45 pilot. I have a wideband O2 sensor hooked up to the front pipe and AFR readings are great across the board, right around 12.5 at WOT, between 13 and 14 when cruising (below 70) and 13 at idle. However when I am on the freeway and cruising over 75mph (at a little over 3k rpm) it starts getting lean, at 80mph I...

Lean condition above 75mph crusing]]> Wed, 04 Oct 2017 14:26:56 +0000 http://bike-talk.com/threads/1975-ironhead-with-a-keihin-carburetor.21128/ http://bike-talk.com/threads/1975-ironhead-with-a-keihin-carburetor.21128/ 1975 IRONHEAD 1975 IRONHEAD 8 Tue, 18 Apr 2017 16:12:26 +0000 http://bike-talk.com/threads/stock-jets.21548/ http://bike-talk.com/threads/stock-jets.21548/ jpaul jpaul
stock jets?]]> 12