Jump to content
HybridZ
Ben280

280z FP Build

Recommended Posts

Those wheels are sick. Are they one off, or available for purchase? BTW if you want to shave some weight, I might suggest removing the rear subframe reinforcement on the rear deck, and the impact bumper support structure in the front and rear if you haven't done that yet. That should all be good for at least 20lbs, probably more.

They are available for purchase. This was their first set, but I think he is offering them now! I'll have to look into those areas for weight savings. Getting anything out of the nose and tail of the car is perfect, keeps the weight inboard. I imagine there are some pieces left in the rear, although the front is pretty stripped out!

Share this post


Link to post
Share on other sites

Beautiful car, fantastic fab work. We demand some video!! 

 

Thanks Nelsonian! Here are a couple videos from last season. One at National Tour (before the injector exploded) and a few longer ones from ORP. One is where I realized that my hood was seriously deflecting at speed!

 

National Tour: https://youtu.be/xrVM4rVbvCQ

ORP Session 2: https://youtu.be/MuhEKT8anXo

ORP Session 4: https://youtu.be/PeG4XwHKOj4

 

 

There was a photo of your car in Sportscar Magazine that comes with an SCCA membership. I think it was last month. Aren't these cars a blast??

I saw that! Too funny, particularly as it was for a different region! ORSCCA doesn't advertise our events in Sportscar, although we probably should. These cars are a blast, even if they are increasingly less competitive on the national stage.

Share this post


Link to post
Share on other sites

Cool stuff! I kept hanging around your car at NissanFest hoping to find you and meet since I'd bought that old hitch you made, shame I kept missing you. Maybe next time!

 Oh bummer! Sorry to miss you, I wasn't over there very much until end of the day. Next time for sure!

Share this post


Link to post
Share on other sites

Mid season update! Just been fiddling with the car, my co-driver and I are starting to work out some of the body roll, hopefully some beefier springs will solve some of the issue, or at least give us an actual baseline to start with. Upping from the AZC mystery 200-300# something springs to 400# front and rear. We've been lifting wheels in the slaloms and through hard banking corners. The tire can/should hold 1.8g but we are struggling to get and hold 1.3-5. Here's a video to for you guys, this run was good for top time at our SCCA club event. PAX-wise (for all you SCCA calculator racing fans out there) this time was good for 9th overall. I feel like I'm consistently about 2-3 seconds slower over a 60 second run compared to the fast prepared guys in the club. Bringing the car to the national tour stop, so it will be a good benchmark!

 

Share this post


Link to post
Share on other sites

Video from last week at Oregon Raceway Park. The lap in this video is a 2:06.xx, guess where I lost heaps of time! I ran 3 2:02.xx laps in my last session, no video, only data. Excited to go back and do it again!

 

Edited by Ben280

Share this post


Link to post
Share on other sites

Sad news everyone! My L28 has finally broken on me. Cause of failure has yet to be determined, but it is out for the rest of the season. I think its cracked compression rings, or something oil related, a tear down will tell the whole story. The car will miss nationals, but I'll still be going, just in an STS Civic! I'm also calling and emailing engine builders. if I have to rebuild a motor, then I'm going to rebuild a motor worth owning. 

 

I've got some video from this past weekend, but haven't downloaded it yet, so heres some footage from the SCCA National Tour stop! Combined, my runs were good enough for 4th place in XP. 

 

 

 

Looking forward to making some more mods this winter, and adding hopefully double horsepower to the equation! 

Share this post


Link to post
Share on other sites

Upping from the AZC mystery 200-300# something springs to 400# front and rear. We've been lifting wheels in the slaloms and through hard banking corners. The tire can/should hold 1.8g but we are struggling to get and hold 1.3-5. 

 

1.3 to 1.5 may be all you can get if the pavement is not really clean and rubbered.  It may also indicate that your tires are getting too many runs on them.  You'll need a clean surface and the tires up to temp to ever see numbers over 1.5.  When a bunch of us used to run our cars in prepared classes in Medford, OR we found that most cars worked pretty well with 550s all round, which is assuming a weight of around 2K pounds.  The higher spring rate will help put heat into the tires.  I know there are many ways to skin a cat but that resulted in a FP car that took many TTOD and was top on top of PAX.  To put that in perspective on the Fall Enduro course it would now lap in 44.75 seconds.  Not sure if that helps if you haven't been there with how the car is currently configured.

 

Cary

Share this post


Link to post
Share on other sites

I think it was old tires, but the springs are definitely helping. 

 

Don't remember my lap times from when I was at the Enduro in 2013, but that benchmark is a good piece of info! I end up looking at a couple of the other prepared car drivers regionally, and comparing PAX time. Maybe next year I'll be able to get back down there!

Share this post


Link to post
Share on other sites

Picked up a new (to me) motor today! Rebello built 13.8:1 with Carillo running gear the original dyno sheet from 3 years ago shows 282hp at the flywheel with SU carbs. Hoping that EFI/ITB's and tuning will get it into the low 300's at the flywheel, and 270+ at the wheels. 

 

Excited to get my ITB's finished up and synced! Need to do a bit more research on tuning for pulse length before I throw down money for velocity stacks. 

Share this post


Link to post
Share on other sites

Hoping to get some good results next season Tube80z! The suspension should hold up, need to do some swaybar tuning next year, and likely a shock upgrade will be in the works soon. 

 

Clarkspeed, I'm looking into that possibility, it would certainly be cheaper and easier for intake tuning!

Share this post


Link to post
Share on other sites

 Tube80z! The suspension should hold up, need to do some swaybar tuning next year, and likely a shock upgrade will be in the works soon. 

 

I have no doubt it will hold up.  What I meant is to take it to the next level it's going to require some changes.  A big one I haven't seen anyone try yet is reducing the front scrub radius using struts.  I'm cheating and using a-arms.  Look at what BMW does with dual lower ball joints.  Or Ford and GM with a strut that has an articulated upright on the end (superstrut).  Technology has moved on, fortunately in prepared you can bring your car up to date.  That's what it's going to take to take the fight to Gorman's Porsche or some of the other cars.  As they say the first few seconds are easy.  It's those last few tenths that get very hard.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×