Leon

Looking and sounding good! A bit rich at idle for my taste but she runs smooth. Nice job Steve.

Can't hear it either...

Thank you!

Worked on the car after work during this past week, culminating in a final push on Saturday night to have it ready for Blackhawk Cars & Coffee (why does it always happen this way... ). Finally fired her up at 12:30am, fixed some minor issues, and synced the carbs! Got in a few hours of sleep and made the hour-long drive up to Blackhawk early this morning and just got back a few hours ago with no issues. I need a weekend of fine-tuning and then I should be ready for some dyno work. I didn't take any photos at C&C but snapped one at a buddy's house just after a light sprinkling of rain.

But in all seriousness, this is not a trivial task. The question to ask is, is it worth it? Engineering R&D is not cheap. If you're up for it, please do it! I'd love to see the execution and results.

Thanks Brady! The head is back on the block as of last night, I did end up using a gasket for the intake/exhaust (had already bought a Nissan gasket) and trimming it around the locating pins. I even installed an L28 head gasket this time! I'll be doing my best to work on it in the evenings this week. There shouldn't be much left to make it run, just need to reassemble the carbs, put a few odds and ends together, fill with fluids, prime, and do my third break-in in about 1500 miles. There are some other things I'd like to do but that can wait until it's back on the road.

Hi Steve. If you're familiar with Keith's work you're already ahead of 99% of Weber "tuners" out there... Make sure float levels are even at 25-26mm, carbs are sync'd, valves adjusted, and the ignition system is in tip-top shape before dipping into carb tuning. Once that's all set, you can try F7 e-tubes and 130 air jets for better tip-in (if you want to stay with Weber jetting).

Interesting, it looks much shorter in the photo, must be the perspective.

Looking good, is that a Mikuni manifold? Rebello pinned my intake as well, it's pretty common in the race engine world.

Same with Isky, he's better on the phone than email. Your geographic location may make that challenging though.

No problem!

Sweet man, I haven't been at Yoshi's in a little while. I need to get this Z put back together...

Hey Josel, I'm not sure how long the pins are since Dave put them in. I'm giving him the benefit of the doubt that they aren't too long. Your car's looking pretty good, looking forward to seeing it sometime.

As promised, here are some shots of the pinned intake manifold:

It's essentially two socket head cap screws threaded into the head, with holes cut accordingly in the manifold. I can take some photos tonight.

Thanks for the cam gear tip, Mark! I'd guess there won't be much power difference between 40mm and 41mm venturis as I believe the restriction at the butterfly is effectively a 40mm venturi. Would definitely be interesting to see the results!

Looks tidy, nice job!

I don't think caster settings will inherently throw off static corner weights by much. It's more the jacking effect from camber changes that causes that. Time to put some corner scales on the to-buy list!

Shh, don't tell everyone!

Any race-alignment shops around you? Are your tire pressures even L/R? You can eliminate any tire/wheel issues pretty quickly by swapping left-to-right and going on a test drive. I've had unevenly worn tires do this, although it seems like you have the same issues with both sets of tires you've tried...

Picked up the goods this morning. Rebello re-cut the seats, installed new valves+guides+seals, and did a street port. Dave mentioned that this casting was better than most so minimal intake port cleanup was necessary. Intake valves are Supertech, with an undercut valve stem for slightly less restriction. The exhaust ports, on the other hand, were pretty worked over... Dave also hogged the crap out of the TWM manifold which he said didn't line up very well with the ports. I had carb-matched it previously but he finished the job! The manifold is pinned to the head for alignment, you can barely tell where the manifold ends and the port starts. The cut-out for the injectors kind-of gives it away. Hoping to find time after work next week to piece it together!

Very ingenuitive! I'll think about doing something like that, thanks.