dvcn

I just spoke to Racing Beat, they have the Holley 6pt manifolds in production. They will fit 84-92 6pt 13B's.

They are still working on tuning the Holley 600 so the complete kit is not yet available.

rico05

I saw that the other day as well. Now someone needs to buy it, and tell us how great it is!!!

hyperdaddy7

is it an injection system or carbed system? Does anyone have a link?

rico05

Carbed system. Racing Beat does not do direct links. Go to www.racingbeat.com, then Rotary Performance, then 1986-92, then Holley intake kits. Click on the Holley carb, and intake manifold. It is pretty pricey though!!!

FPrep2ndGenRX7

www.racingbeat.com

Its carbed.

edit - rico beat me to it.

rico05

I also beat you to a pic!!

dvcn

http://www.racingbeat.com/resultset....rtnumber=18045

A stock 6pt should use a 600cfm Holley.

A tip on the fuel system: Use the stock FI fuel pump, use a Mallory 4309 fuel pressure regulator. It is a bypass type (uses the return line) and can be adjusted from 3-65psi. It is meant for use on carbs while using a high pressure fuel pump. It also has a vacuum/pressure reference so it will raise fuel pressure with boost, when you decide to slap a blow through setup on.

perfect7

very pricey

dvcn

Pricey relative to ????? Is there a better product for cheaper?

When the kit is ready, it will be a true bolt on that will tuned very well. I currently have the RB Dellorto setup. I've made jetting/adjustment changes and I always end up going back to the original Racing Beat setup. They do their homework and it's worth the price.

hyperdaddy7

i would love to goto carbed setup. I think carbs are so much easier to tune than EFI. I they are so easy to adjust air/fuel ratios.

13B2QuIcKNy

i know im buying one..... finallyyyyyyyyyyyy after so many years waiting.. finallyyyyyyyyyy the 84-92's dont have to use 12a or turbo II side housings to do a carb transplant! this is great! im jumping up and down!

hyperdaddy7

if you consider the hp gains your capable with a setup like that, it really isn't too bad.

FPrep2ndGenRX7

I want to see Racing Beat do a dyno test of a before and after results in the same car with all the emmisions crap removed and a standard header. To many people on the forum say this an that about carb vs. FI and which is better but nobody really produced any good proof. I gotta see the results to believe that a Holley carb is going to be better than a de-smogged factory FI setup.

It is a neat looking setup thou.

MasteRX

I spent close to $1000 on new injectors and other EFI parts for my car and I could have done away with all my cars running problems in one swoop if I were able to buy a kit like this and also would have spent less and made more power. Not a bad deal to me.

hyperdaddy7

In the mazda rx-7 performance book ( i bought it at barnes and noble, it is a good book i recomend it to anyone), it talks about the perfromance differences between the two setups. The carb setup was nice because it was easy to tune, and adapt to different track conditions. However the aftermarket efi's systems, once properly tuned did prove to have higher perfromance gains. They said that the efi system took months to setup properly though.

In my opinion, simpler is better. Keep things simple becasue if somethiing goes wrong, it is easier to fix.

ACTION RT

so how much power would you gain over the stock fuel injection system?>?

Action

dvcn

The RB estimate of the system is 185-190hp at the flywheel. They will probably get it on their dyno after they finish dialing in the Holley.

A couple more positive items: it is considerably lighter than the stock EFI intake tract and it will clean up the engine bay considerably. You can actually see the engine!

FC3AZ

will a carbed setup pass visual inspection? meaning, will it have a CARB number?

HAILERS

Don't forget about ignition, as in distributor vs cas.

Maxthe7man

You've got to be kidding me, pull the efi in favour of a carb,umm no thanks..
I have carbed and efi'd vehicles, tuning a carb is way more work than tuning an efi system, but if you like files and drill bits, I guess thats up to you..
As far as that system goes, way to overpriced for old technology, figure a 1000.00 US once installed or maybe a little more, a microtech efi is cheaper than that, or how about a used wolf 3d or a haltech, any of those would allow you to remove the AFM and give you easy ignition adjustability also, why would one want to go back to a distributor... . If that carb kit was around 450.00-500.00 then maybe..
You could always tune via an S-afc, version 1 or 2 for that matter, a custom throttle body, some porting and an s-afc would put you in for about 650-700 , there are just way better efi solutions out there than going back to the stone age.. The only feasible applications I see for this setup is where a 6 port 13b is being installed in a dune buggy, small aircraft or something like that, for street driven n/a's, there is better ways to spend money..Max

dvcn

When RB gets done dialing in the carb, it will literally be a bolt on. I've installed their carb kits in the past and they just work.

Drill bits and files? I've tuned a few Holleys and Dellortos butI haven't had to drill or file to do fine tuning.

Whether you like the Holley or not, it is a good choice since rebuild/tuning parts will be available indefinitely and cheaply.

Stock EFI is restrictive compared to a good aftermarket carb/manifold, but to each his own. It all depends on what you want to do with your car.

You can dial in a carb to give good response, mileage and peak hp.

BTW, Crispeed made 500+hp blowing through a Holley (and running a first gen distributor).

bill Shurvinton

I have the article where racing beat street ported a 6-port and then tried a holley, mikuni, dellorto and EFI (using DCOE style 50mm TBs).

The holley was, quite frankly lacking. At 6500 RPM it was 18HP down on either the EFi or dellorto and only reached the EFI power levels at 8500RPM. At 5000-6000 the dellorto is 20HP ahead of the holley.

This is not shown in the headlines which are

Dellorto 211HP at 8100
EFI 226 at 8200
Holley 224 at 8400

In fact the torque curves for the dellorto and the EFI setup were identical, just offset by 500RPM due to a 2" difference in overall tuned length.

For the street the EFI setup with a longer inlet to get the same curve as the dellorto would be the best.

bill Shurvinton

EDIT: Just spotted I had dredged this one up. Oddly another post I was look at showed this in that newfangled 'other posts of interest' as the first post.

Sorry. I will now return you to the normal programming.

Bill