Forums

carb # 33241

Wed, 16 May 2012 00:30:24 GMT

I have been using the full vacuum port on the carb for my trans... it started down shifting really bad yesterday and so i pulled off the rubber line from the vacuum modulator ( its a c-4 ) and raw fuel came out, about a 1/2 cup!!

So... i hooked up a vac gauge using a clear tube to the same port and sure enough at idle gas is slowly dripping out of it HELP!

I am now using a port off the manifold for my trans, i know thats how it should be anyway.

25334 list

Mon, 14 May 2012 14:33:23 GMT

What is this carb i have been running your 1150 dominator but the class has switched to a 4150 only and i have this carb so what is it ????

List 25334
Meter blocks 11180-3
And on top of the carb is gr 7867b

Any help would be great.

Carb 15200 metering blocks

Mon, 14 May 2012 00:36:28 GMT

While doing some cleaning and inspection I noticed some very, very small pin holes on the back side of the metering blocks @ what would be the backside of the accelerator pump channel. "small circular area" Is this some sort of a "bleed off" ? Been fighting a new hesitation. Carb has been pretty much flawless since 2006. I'm fairly meticulous on maintenance and cleaning. Actually found this with my spark plug reading tool during inspection. Thanks!

need help, SV1-E85 carb art no:30105

Sun, 13 May 2012 19:19:44 GMT

Hi got some questions......... went to track and jetted carb up to 12-sizes. did not chang "Nothing. even changed timing from 29"degrees up to 45"degrees pretty much ran the same. Im lost. got any suggestions? by the way its a big block chevy 605 cubic inch . with an e85 sv1 carb. Thanks: shawn part no:30105

Carb 33026

Sat, 12 May 2012 11:41:40 GMT

Hi Patrick,

Finally got this carb put on and fired up. Still gotta set the floats and idle mixture but all seems well.

Quick question though-

When I filled out my quote form, I told you I was planning to use a 1" Wilson tapered spacer on an RPM air gap intake. You mentioned that the combo may not like the spacer which I understand. I will be using a 1" spacer regardless, and my other option is an open spacer. If I go to the track and try both, do I really need to do any tweaking or can it just be an A-B-A test between open and tapered seeing as both will be 1"?

Also, I can call to clear this up if you need me to, but my order was shipped to an old address I had. The address on my tech sheet is correct, the shipping address should be removed.

Thanks,

Jeremy

hesitation from 3000rpm to 3500rpm

Sat, 12 May 2012 10:31:32 GMT

hi,

i have sb2 sbc 420cubic inch chev that makes 870hp at 7500rpm that R.C. engines in adelaide south australia built for me.I have just purchased one of your sv1 carbs from outlaw speed shop in australia and cant get it to run a1 just yet.the tech build sheet shows the carb no. is 32467.my problem is as i get the revs to 3100rpm it hesitates till 3500rpm then it takes of again only when driving or under load.The carby is very smooth through the rest of the rev range the other thing i can also pick is that some times i have a slite flat spot if i am in that rev range of 3000-3500rpm.The only way of fixing it is if i come of the throttle and jump on it again.Can fix u please give me some ideas on how i can fix this problem ?Keep in mind that this is a street car also(a fast one!)

Thanks

BEN

Work order #31615

Sat, 12 May 2012 05:30:35 GMT

Hi Guys,

I received my Carb Just before our 2011 Winter season so i am just now getting to play with the Car/Carb. I did install it before the snow arrived but really never got a chance to try it out. I did discuss with you (Pat) via E-mail about it being very rich at idle and you recommended a few things and sent me a tuning sheet for the Carb that was very help full. I had a chance Today to try some of your ideas and was very successful! I just wanted to thank you guys for all your support and wanted to express how happy i am with my new Pro System carb! your customer service is the best in the business.I can not believe how crisp and how much more "seat of the pants" power that my 347 has now! Keep up the good work guys and i look forward to dealing with Pro Systems again for my next project .....

Thanks Again

Plug Gap

Fri, 11 May 2012 12:57:08 GMT

What do you recommend for a plug gap? I have 12.5 to 13 comp. and using VP C-12 with a msd 7al-2

Thanks

how much to convert Drag carb to E85?

Fri, 11 May 2012 03:46:47 GMT

My Invoice #16350 was orginally a Meth carb was converted back to gas #12586. Was purchase thru A&A Machine in Davison

I may need to go E98 for my Compression ratio

Motor is 15.6 to 1

Lean Idle #31842

Fri, 11 May 2012 02:14:29 GMT

Having some issues with my new 950. Will not idle at all without pumping the pedal. Pulled all the plugs after trying to get it idle for 15 minutes or so. Expected plugs to be black and wet, but they were all white as white can be. I called and talked to John and he advised removing the secondary idle restrictors. I have not tried this yet to see if it helps, but what I am curious about is since this carb was built to my engine specs, does this indicate a problem with my engine?

carb # 23235

Thu, 10 May 2012 16:32:18 GMT

I have this carb that is untouched from you. Im selling the motor and would love to use this carb on my new build. Its a stock bottom end ls3 with ported and polished SDPC ls3 heads flow 350's at .600, Comp Cam 617Int 624Exh 231/239 113lsa, GMPP single plain intake , full length headers(2") powerglide trans with brake and 3400 stall and 3.73 gears. What changes need to be made to make this a good street strip carb. This has been the best carb that i have ever seen used.

drag carb conversion to circle track?

Thu, 10 May 2012 14:24:30 GMT

carb no: 28303....P2S264. I am trying this e85 carb on my circle track modified. It pops coming off the turns thru the straight. What is your reccommended tune to cure this problem? The carb is as delivered from PSs.

newbie by the way...hello all.

Carb n00b- first of many questions Im sure

Thu, 10 May 2012 13:17:43 GMT

Carb build number is 6548199

ill start off with the basics- as i just fired the engine yesterday for the first time.

I adjusted the fuel level where its just visible in the sight glass-

i have not touched the mixtures screws as I watched a vid on the Holley youtube channel that said to use a vacuum gauge.

I can get the car to idle at id guess around 1k rpms-

I don't have an aftermarket tach yet and the factory one is inop.

I guess my first question is do I need to use the vacuum port on my bypass style regulator for a N/A carb application ?

I have the Fuel pressure set at about 6.5 psi and when I hook the vacuum up it pulls it down to 3-4psi.

Thanks,
Ronnie

Carb#31335

Tue, 08 May 2012 21:24:40 GMT

We need to know what size the carburetor is?

rear carb problem

Tue, 08 May 2012 15:42:36 GMT

buddy has 2 pro systems 950 carbs on big block chrys built for him back carb killing back 4 plugs real black, swaped back carb to front killed front 4 plugs real black any recomendation what could be wrong with the one carb the good carb will clean the bad cyls back up