Photographic update for you all who are interested...

Bread tie test before the test drive after installing the spacer:



Bread tie test after installing the spacer after the test drive:



Yup! Secondaries are working now!

Spacer installed:



Overall engine shot just for fun:



Attached pictures are as follows: Leading plugs after spacer, trailing plugs before spacer, trailing plugs after spacer.

When I bought it, it had BUR8EQ plugs all around. I was running the BR7EQ leadings with BUR8EQ trailings because the leading BUR7EQ plugs fouled when I was trying to get it tuned after the initial install because it was running so damn rich.

After the secondaries started opening and it wasnt running pig rich anymore, I installed a fresh full set of BR7EQ plugs. If anything, I would say the plugs tell a good story about how much better its running now that it has that spacer...

~T.J.

 

good stuff.

that is such a nifty trick with the bread tie, im trying to think how it could be used on the nikki.

 

interesting. i'll have to try the spacer and see how it works out.

 

Nice to hear the positive results!! Thanks for trusting my advice.

 

Thanks for giving it! It made sense in my head once you mentioned it, and it was definitely cheaper than a new carb, about $280 cheaper, haha.

Ive got some funny spots to work out driving now, but it definitely runs way better. I will crack it open and look at the jets again and write it all down so I can go get some new ones and toy with it a little.

~T.J.

 

glad things worked out.....engine bay is looking good...... what material is that space?

 

Its a phenolic spacer. Kinda plasticy feeling?

~T.J.

 

Any more updates??

 

he posted on FB something about loosing the engine and gonna rebuild it.

 

No waaay!

 

Say what? I dont know you, nor do I use FB enough to post anything about my car

My motor is fine, its running great. I havent had time to grab new jets from the shop yet, Ive been busy pulling parts off a local car being parted, plus my girlfriends Moms car needed a tune up, and Ive been busy doing some "spring" cleaning around the shop from the 7s build up. I will try and get out there Monday since I think theyre closed tomorrow (Sunday).

I brought the fuel pressure up 1 PSI to 6 PSI, reset the floats, and that actually seems to have helped with a stumble I had. I will pull the plugs and recheck them since it was looking a little lean during cruise and WOT pulls before at 5 PSI, but either way I think I need some jetting and AP work.

I will update once I get that going. The only other issue is my front left caliper apparently has decided to start sticking. I came up to a stop sign and it was smoking. I have rebuild kits on order but for now Im going to just try and work it free with it off the car, hopefully tomorrow.

~T.J.

 

Now that's a happier update!

 

oh sorry. i was thinking this was this other guy that was having similar carb problems.

 

i am thinking about getting a carb spacer too, is it better to use an open or 4 hole spacer?

 

open!!! Assuming you're not talking about a nikki

 

no, not a nikki. a r.b. holly and intake.

 

open then, even 1/2" makes a notable difference.

 

Yeah, the 4 hole would be the exact same thing as the carb just bolted to the intake. The point is to make an open plenum space where the carb fan feed all 4 intake ports at the same time.

The way the RB setup is mounted to the intake, only two intake ports are pulling in air/fuel from the primaries, the other two go to the secondaries. With the open spacer, it combines all that so all 4 can draw through the primaries, and also the secondaries when they open as well.

PERSONALLY, I think thats a better setup since they can "share" the same intake charge versus possibly feeding one rotor a lean mixture, or one rotor a rich mixture - or whatever. Theyre all getting the same mixture because of the open plenum space the spacer creates. I also think the new found intake velocity/volume from all 4 intake ports pulling a charge in rather than only 2 is what is responsible for my secondaries working now seeing as theyre based on the venturi effect to create vacuum to open them via one of the primary venturis.

~T.J.

 

So, did you do any more work to the carb??

 

I picked up the number 70 jets today (no cam kit though, they didnt have one in stock), but I havent tinkered with it yet. I got stuck cleaning the shop instead. Turns out there is an appraiser coming Friday so we have to make it look all pretty and clean. I will try and find some time tomorrow to mess with it, but we have to take a load to the dump and metal recyclers as well as straighten things up.

~T.J.