jaydun323

iTrader: (2)

exactly what does a company like racing beat do to rotary prep a holley carb
and what would one have to do to prep a holley carb for stock port 12a
the reason i ask is i have a holley 650 DP sitting around the house and i have heard people having good experiences with them on there rx7's
thanks justin

kgray

650 is too big for a stock port. Could be used for a bridgeport, but way too much fuel for a stockport. search for "rb holley specs". Someone posted the specs of the 465 or pm me and i will try and dig it up.

dj55b

iTrader: (2)

+1 on too big .. i have the RB 465 SP style from RB and it even still runs a little rich in the top end .... more carb doesn't more power, it actually usually means less. Matching your carb to your engine porting is the best way to do it.

jaydun323

iTrader: (2)

thanks for the info guys guess i will just have to sell it
i have a 48 dell that is in bad need of a rebuild would that be a better route rather than
getting a 465 holley
opinions please

dj55b

iTrader: (2)

dell are supposebly pretty good ... and a 48 would be a pretty good size for a stock port ...

trochoid

iTrader: (6)

The Dell is a much better choice. If you need a rebuild, PM me.

sgieldon

Stock Port Racing Beat Prepped Holley Spec Sheet.
The SP stands for Stock Port not Street Port!
sgieldon
steve

t_g_farrell

iTrader: (1)

Dellorto are excellent. Rebuild kits can be had from www.dellorto.com ( its in th UK ) and it only took about a week to get it shipped. You have to be careful about how you deal with the extra thick AP gasket but other than that its pretty straight forward. Go to this link for a lot of info for tuning it once you get it on the car.

http://www.gruntled.com

PercentSevenC

.

never mind.

Latin270

lol....I always thought "SP" stood for street port!

sgieldon

When I tore my 1st RB Prepped Holley apart ie years ago I called them about what they had Printed versus what was the Real Deal. Jim from RB told me that they had Mistated the Spec's and should have read SP stood for Stock Port not Street Port.
This Spec Sheet is a Basic Starting Point and some parts have been changed alittle threw the years.
Just a good starting point and every Stock12A with this set-up will get you going until you figure out whatever parts are needed for your Style of Driving.
If you purschase one of these RB 465 Holleys from them I can give Ya's some Great Advise to make them work even better.

The only Holley's that I will help with are the RB Prepped 465cfm Carbs Part # R1848-1. It will cost you about $275.00 to dew the upgrades (Yourself). On top of buying the Carb from RB.
Sounds like alot but if your running a StreetPort and want your Car to Idle and Run like a Banshee, I will post all the Goodies that need to be Modified. These Mods work great for SteetPort and StreetPort with a Mild Bridgie.

As stated above this is only for the RB Prepped Holleys. So don't ask about any other Carbs
sgieldon
steve

Latin270

I gave up on RB Holley carbs along time ago! Not my cup of tea. Personally I think there are better carbs out there if you know how to tune/jet, but thats just my 2 cents.

dj55b

iTrader: (2)

care to share that info with me Steve? PM me about it .. thanks

rotaryboy23

iTrader: (1)

K, looking at the specs for the 465 RB Holley, it says they throw in a #49 jet on the primary side... I suppose this could be the source of my woes for my 390cfm Holley.. Even it comes with #59 jets! 49's seem bloody tiny! or am I mistaken? I get 23 MPG on a routine basis, so I'm not complaining, but my state of tune leaves something to be desired...

rgood2b

I've been running a stock 600 holley on my stock 12a for some time now. A 600 runs fine if you know how to set up holleys. The idle is a little rich but it runs great though the power band and has excellant top end. I could fix the rich idle problem with smaller jets. Right now it has #52's in it. Rb does extensive modifications to thier rb carbs. I yet don't know why. This 600 even still has a power valve it it which rb says you can't do.

1stgenNutt

iTrader: (3)

I do not prefer rb holleys they send 49 jets wich cause a high idel and the bowls the put on the unit cause slosh on cornering. why make a 465 carburator for a sports car without puting good bowls on them. 800+ bucks for the kit then another 150+ for the bowls why not sell them with the right bowls to begin with.

neektar

iTrader: (2)

Or how about sharing it with the rest of us? Lol

Sounds like a really good write up.

dj55b

iTrader: (2)

still waiting on that

sgieldon

I'll post the Info today.
The only thing I ask is not to get alot of PM's asking me what if I do This or That.
I did this awhile back and was overwhelmed with ?'s.
Every application and Engine will respond differently no matter what setup your running.
I have great luck with these Mod's on 4 of the RB 465 Holleys that I have done the Extra Work and Spent $$$ that it takes to make them work right.
sgieldon
steve

cheorotary

I try set up my holley 600 but smoke and pure gas smellbehind muffler I have 64 meetering yet primary and 68 on secondary which one is the recommand And i have 6 gas pressure on fuel gage

wankel=awesome

It'll never run right. Ever.

rotaryjunkee

Lol this thread is 8yrs old guys.

Sent from my gs4 using RX7Club app

gosman

8 years old thread and some people still learning the hard way. Like me.! 1979 RX-7 Bridge 13B 4 barrel Holley. Still trying to tune it!