That one is not. 637 BBC with twin 105mm IIRC. He is running NA this event after an oiling issue yesterday.
Just needing everyone safe today!!!!
Bonneville Landspeed Racing - Let's Try a Thing.
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Just needing everyone safe today!!!!
Holy F'N **** DUDE.
From wanting to port some garbage to a big chunk of gold.
Excellent.
As you can tell I'm excited for you.
Live stream starts at noon CDT. They are moving all 3 race courses
TT5.9mag
Two atmospheres are better than one
Any reason why? Did they get rain?
I am guessing for safety reasons after yesterday's crash. It happened at 2.5mile and spread debris for a couple miles and likely dug up the surface.
I did see a video of people talking about a malfunction of the traction control on the pass prior. Just hearsay, but whomever was talking said they aborted early from the car being super loose.
and we are live..
my buddy is 4th in line on their course
they are pulling up to the start now
Old International push truck
Old International push truck
My new vintage fire suit just got here. I love it, and it is white! Will be so much better than typical black in desert sun. Vintage Simpson SFI 3.2A-20
abdywgn
dismantler
you look very distinguished in that suit! almost like an astronaut.
Live again...
Yesterday was the last day of live stream.... sad face
PRH
Well-Known Member
How did they do?
He had to make a licensing pass 125-150. He ran 138 but the engine wasn't pulling like he wanted. They worked on it all day, but I think he threw in the towel as he went there with twin turbos, had issues, converted to NA and had more issues. It is a tight budget and can't afford to hurt it, if it isn't already. I haven't heard from any of the crew today.
Go back to Day 3 link and FFW to 1:41.39 ish. That is his raw aluminum streamliner. Car 650
I just checked the triple valve springs that came with the heads.
Install height of 2.1
seat 219psi
open at 650 lift (current cam) 592psi
Install height of 2.1
seat 219psi
open at 650 lift (current cam) 592psi
I scored an intake last night. Should be here in a few days.
So, now we have:
Indy 440-1 ported with 2.25/1.81 valves
Indy 440-1 intake
Chet Herbert 260/270 @ 50 with 685 lift with the 1.7 Jesel rockers
Use this on 470" B motor, what compression? Does it make enough difference between 11.5:1 and 14:1 other than the requirement for good fuel? I am leaning towards the 11.5 so 93 octane will work for street and race gas for racing. This make sense? There will be overlap bleed off and racing will be at elevation. And what carb? I see some great results from using a 4500 carb and super sucker adapter to 4150. Sizing thoughts?
Indy 440-1 ported with 2.25/1.81 valves
Indy 440-1 intake
Chet Herbert 260/270 @ 50 with 685 lift with the 1.7 Jesel rockers
Use this on 470" B motor, what compression? Does it make enough difference between 11.5:1 and 14:1 other than the requirement for good fuel? I am leaning towards the 11.5 so 93 octane will work for street and race gas for racing. This make sense? There will be overlap bleed off and racing will be at elevation. And what carb? I see some great results from using a 4500 carb and super sucker adapter to 4150. Sizing thoughts?
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TT5.9mag
Two atmospheres are better than one
Pick the fuel first. That will dictate what class the car runs. Set the compression to match the fuel. I’d run as much compression as you can on whatever fuel you pick. How do they classify E85 for bonneville? Does that put you in a “fuel” class?
TT5.9mag
Two atmospheres are better than one
I like.
And I’d use something in the 1050 range.
I believe I want to stay will gas. Alcohol would be nice for the cooling properties and tuning, but gas would make it easier with my overall goals with the car. E85 fits into a Fuel class.
If I run Time Only, then I can do whatever I wish, up to my safety equipment mph limit. IF running in my class, gas seems to be the right choice. Again, if not in impound, then not a super big deal.
The record for A C/GALT (2024 book) is 237
The record for A C/FALT (2024 book) is 264
So, if running gasoline, I see numbers of 4% change in HP per point of Compression, unless the cylinder pressure wasn't optimal due to cam profiles. It doesn't seem worth it to make it race fuel only for 50-75hp. Maybe it is.
TT5.9mag
Two atmospheres are better than one
The percentage of gain from compression isn’t a direct correlation like some people like to make it out to be. On a 300hp small block Chevy yea you might see 3,4,5 percent as you go up in compression but at the 600-700hp level backing OFF on the compression, especially when you have the heads and camshaft to go with it, will really hurt power.
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