glyphon

iTrader: (1)

after a long hiatus, i'm back, for anyone who remembers me.

I bought Crit's 85 GSL-SE a few years ago. Slowly replacing and upgrading the bits that needed it. Then one day, the car started hitting a wall at 5k, then 4k. Did a fuel flow test, and found that it was flowing about 1/3 of volume that it should be.

So, after delivery issues, I replaced the fuel pump with a new bosch pump and replaced the fuel filter at the same time. check the flow. nothing. not a drop. did some trouble shooting and couldn't find anything, and then life and a 2 year old took up all my time, and it sat there for almost a year.

Last week, Cletus and I spent a long time diagnosing. Replaced a worn/kinked hose, put on a replacement-replacement pump, removed a mostly clogged sock filter, and still nothing. so we dropped the tank, and removed the clogged intank filter, and adjusted the pickup line making sure it was at the bottom of the tank and put a new inline prepump filter. still nothing.

So, i was searching around the interwebs and saw a picture of a banjo bolt, complete with holes. and it dawned on me, that the bolt on the replacement pump didn't have the holes. got home and checked, no holes.

grabbed the original pump, and no holes either. So my theory is the pulse damper failed/clogged, and is preventing the fuel from making it to the banjo fitting.

I think is where the issue is. the PD has basically turned into a cap. I can either replace the PD, or i can get an actual banjo bolt with holes.

Thoughts?

cletus

Realizing it would make a mess, ever just take all that off the end up the pump and see if something flows out? Putting a temp line on it into a bucket may help limit said mess.

glyphon

iTrader: (1)

thought about that earlier tonight. but, because of the impending storm tomorrow, it is down off the stands and out of the garage making room for the IS.

glyphon

iTrader: (1)

basically, thinking about getting something like this. just need to verify the size and pitch first.
http://www.summitracing.com/parts/EAR-997591ERL/

SirCygnus

iTrader: (1)

Been looking for a gun for a while now, and i finally found one. a Colt 1903 with two magazines. one aftermarket and one original. no box or anything. got it for 399 and with cleaning kit, eyewear and ammo it came out to be 499. id say its a good buy. took it to the range, and it did well for a 100 year old hand gun and it was straight and clean. no fuss, no muss.

CRogers27

https://www.rx7club.com/showthread.php?t=951462

I have been looking at buying this, but could someone tell me how the intake would work on my FB 12A? It does not look to have a bend in the intake and thinking I may need a elbow, but have no idea for sure. I have been talking to the guy and he said it was on a 12A, but it was not a RX7. It this carb worth the investment??? I am hating my Nikki carbs now....

t_g_farrell

iTrader: (1)

The only issue will be that the carb will sit right over the headers/exhaust manifold
and the clearance with the right inner fender will limit the filter you can use on it.
Otherwise it will work fine on a 12A as long as its jetted right and tuned.

I think you want the SA radiator (79-80). It has the holes in it already to take the
oil cooler mounting brackets.

GKW1957

You got a pretty good deal for even the lowest value version based on my 7-year-old blue book of gun values. Good score. I love the machine work in older firearms.

83will12a

whats up everyone. mitty is just a few days away and i am only going one day. wife says so.. so i was looking for everyones help. which day would be a better day to attend saturday or sunday.. i wish i was going to be driving my car up there but it is still a long ways away being road ready.. thanks email me at wills8312a@yahoo.com or just send me a message on here.. thanks a bunch.. "Keep those rotors turning"

CRogers27

Thanks for the info. I need something that can bolt-up without an big issue. I think I am going to pass.

CRogers27

Guys, need some input. I am looking for a carb setup that will work well on my GSL FB (I am new to the RX7 family). Any input on this setup would be helpful. I am a college student and do not want to blow $$$ on something worthless. Please help!

https://www.rx7club.com/1st-generation-rx-7-1979-1985-parts-101/racing-beat-12a-upper-lower-gsl-se-upper-intake-manifold-sk-racing-48-carb-949973/

ray green

iTrader: (14)

Chris a Nikki rebuild kit costs less than $30 at autozone. The Nikki 4 barrel is a fine carb for a nice balance between power and fuel economy, especially if you already own one.

mrremote

LOL, rays right, the Nikki is a great carb for fuel economy.... power on the other hand........ It need some stripping and other internal work for that. ;P

Side drafts are a good bit of fun. I run a weber side draft, and its a blast, tons of power.. the fuel economy though...... dont ask about it.

IMO, you should rebuild your nikki, and wait on a side draft., i dont know much about Sk's but if i were to buy a new side draft id get a dellorto.... probably.

care to weigh in Gene??? (who i also need to call asap! lol)

Crit

iTrader: (6)

Hmm. You may be onto something related to banjo bolt hardware, but I don't think the pulsation damper will be your trouble. The PD is on the outlet side of the pump, if memory serves. The PD is basically built into the cap of the banjo bolt and is just a diaphragm and damper, but is not in the fuel flow at all. I can definitely see how a replacement banjo would block the flow at the outlet, but I'd be hard-pressed to explain how the pressure would gradually decrease until failure.

If you have time to do some more testing, I'd start with the pump out of the car with no fittings. Drop the suction side into a bucket of water and see if you get a shower from the outlet. If so, add the inline filter, a length of hose, and the tank pickup (if the tank is still dropped) and repeat, again with water. If you've still got good flow, then you can focus on the outlet side with the banjo / Pulsation Damper, dual copper crush washers (you do have two on there, right) and whatever hardware might be tricky.

I think you're still not to the root cause, but the good news is that you'll get your car back once you find it. Zero fuel is definitely your problem

Crit

iTrader: (6)

Radiator is totally different. If the guy's had the truck for about two years (used to be in Lawrenceville) and it's red, then run (don't walk) away.

CRogers27

I need to call you as well....lol

I was thinking about that and just worked on my Nikkis (I have 2). I got one to work great and the other...well....I have got to take it down again (I rebuilt this one) and figure out why one primary is not squirting fuel down the tube...I am wrecking myself on this one....Since you live in the area, we also need to meet up...I wanna see your setup!

GB7

iTrader: (1)

Yep you cant beat the nikki for economy Ray and Mike swear they get 100mpg or so,but if your dont care about MPG or COST then go side draft or IDA down draft .
Tomorrows the 29th guys who is headed to Road Atl on Friday?

SirCygnus

iTrader: (1)

100 mpg aint happening.

GB7

iTrader: (1)

sarcasm dude . but if you drive it for 20 miles and tow it for 80 miles you get 100 mpg out of an rx7

ray green

iTrader: (14)

You guys with cars that aren't running can make fun of Nikki's if you want to but I've got 450 miles on my Nikki since Monday morning, at a darn decent 23 mpg.

And I haven't had to give that carb a second thought or tweak, not this week, not this year, not since I rebuilt it and stuck it in two years and 27,000 miles ago.

Nikki's, gotta love 'em.

Which reminds me...

IT'S MITTY TIME!!!

mrremote

Hey guys, I was looking into doing a E-fan upgrade... what all do i need to do this upgrade, whats the cost like? and where do i source the parts???

thanks in advance, cant wait to see you guys at the ogta meet. gotta miss the mitty though =(

BrettLinton7

iTrader: (33)

You need a 4 pin relay and an e-fan. Good relays are $15 with the wiring connectors, fans vary. Idk if first gens can fit a Taurus e-fan but FC people do it a lot. They're around $30-$50 at a junkyard. Install is fairly simple, wiring it up is probably the most time consuming part.

CRogers27

Here is my issue! I finally got a pic... There is no fuel coming out! I am able to blow air through it though and the fuel delivery is not an issue. Has anyone here seen this problem before??? I have a spare Nikki on my FB now but it is not what I want to continue using.

Link to a bigger pic...
http://www.flickr.com/photos/6225542...in/photostream

ray green

iTrader: (14)

A pic is worth a thousand words. A video worth a million.

It looks like you're missing the primary main air bleed, a hollow brass screw with a bunch of holes in the shaft that holds down the venturi horn. Without that you won't get any gas.

CRogers27

The primary air bleed was present. I took it out to make sure it was clean at the time on the photo. I can see about getting a video with it on the car. I meant to include that information in the post, but skipped over that "minor" detail...

With that said....could it be anything else?