Chino 240Z

This weekend at the track, the Dual SU carbs had a problem, after a 1/2 hr. session on the track and a 45 min cool down period, tried to start car again and then started fuel flooding from both carbs at the same time. Shut off fuel pump, check press. regulator, and also check floats & needles all okay. Dribbling fuel from both carbs, too flooded to start. These SU carbs had lots of work put into them before I got the car, needles raised, jetted, polished, ect. and dependable for previous owner. Could both diaphrams or something internal go bad in both carbs at the same time? No gas additives, 76 Cool Blue 100 octane fuel, and just tried using Marvelous Mystry Oil for the Carb oil. Always fired first time, everytime, but this time. I've owned car for about 4 to 5 months. Been debugging car and the rest of the car is dialed in, few quick spins around the block now and then getting ready for the track. This was the first solid run on the car for us. I have a set of triple webers, manifolds & linkage, and another set of stock SU carbs on a manifold, and also the set of SU carbs that are on the car now which are giving me problems. I'm headed next week to a shop to go over options. Question: Invest in rebuilding and tuning up the Webers (Which were once on the car, I don't know why previous owner took off?) or should I rebuild existing SU carbs and also the second set of SU carbs for a backup set? This is a track, road car only, no smog, and looking for performance and dependability? Input and comments are welcome, cleaning things up getting ready for the shop next week. Thanks in advance Craig & Cindy. :stupid:

Guess you gotta be careful doing it but. . . We're always careful right? I have detected vac. leaks by spraying small burst of starting fluid or ether around the vac. hoses, lines and fittings. When I notice an RPM change or difference in the way the motor ran there was a possible location where the vac. was taking in the ether. When you find a good leak you can see the spray evaporate very quick and a definite change in RPM. Also the deal with the moisture getting in sounds like the other place I would look too. Good luck. Craig :classic:

I just put in a set of Corbeau Forza seats in my 71. They are more for racing, price is about $220.00 each, but they look and feel nice! Corbeau makes a $60.00 sliding bracket that bolts to the bottom of their seats then into your stock holes. Well if you were closer to California I still have the stock passenger seat, no cuts, looks great, still firm, has it's orig. sliding bracket still, don't know what to do with? Some times you can find them for around $40. Anyone else need a seat?

Can you say "Parts Car"? :stupid: Too Bad! So Sad! Wonder if his fuzzy-dice blocked his view, cause it's still hangin out the front windshield!