C3 Race Car Build

[Oneball]

TBH Oneball I've had all the above issues in the past - an Edelbrock Torker inlet was a big culprit - had to use a 5% angled spacer to get the carb 100% level - compensating with raising/lowering float levels was not the real answer. The other thing perhaps to consider is excessive fuel pressure.......not enough to create an issue during normal running......but sufficient perhaps to create a situation that you have described. Holley float needles IMHO are rather 'delicate' and don't take too much excess fuel pressure......what about trying next size/diameter down float needles? (restrict the incoming flow)......so many people overdo the fuel feed/fuel pump pressure etc on Holly carbs which is generally the root cause of many issues (certainly for street driven cars)

I don’t think it’s fuel pressure, it was a bit low at idle so I increased it to 7psi, it did it before and after. It’s had little and large float needles and no difference.

 

[Oneball]

Dead flat too, I’d have sworn they were at an angle.

 

[Roscobbc]

Sorry Oneball - I'm at a loss now.......perhaps borrow another carb, stick it on and compare?

 

[Oneball]

Sorry Oneball - I'm at a loss now.......perhaps borrow another carb, stick it on and compare?

Thanks. I’ve had another look and the floats weren’t where I thought they were. So put the secondary 1/8” below the sight and the primary just above. I’ll give it another go in the week.

 

[Oneball]

Given it a run and it seems much better. Going to try raising the secondary float a flat at a time and see what it does.

 

[Oneball]

Brake ducting installed

 

[Roscobbc]

It'll be interesting to see how well this works!

 

[johng]

I saw a lot of that view of my car this morning. Whilst out last night I'd noticed that something was rubbing on left hand turns. Looking this morning I found that a couple of my lower control arm bush bolts were loose and 1 was missing, allowing the arm to move backwards about 10mm! I've now put them all back in with Loctite. Hope yours stay put.

 

[Oneball]

It'll be interesting to see how well this works!

Never really sure with modern brakes and fluids, guess will see whether they fade.

 

[Oneball]

I saw a lot of that view of my car this morning. Whilst out last night I'd noticed that something was rubbing on left hand turns. Looking this morning I found that a couple of my lower control arm bush bolts were loose and 1 was missing, allowing the arm to move backwards about 10mm! I've now put them all back in with Loctite. Hope yours stay put.

Have you got lock washers on?
Checking every fastener is on the to do list

 

[antijam]

Checking every fastener is on the to do list

With you on that Tim. I've got a nasty habit of tightening nuts and bolts up by hand as I go along and telling myself I'll go back and torque them all up correctly when everything is finished. I've found out the hard way that I don't always remember every one - so now I make a list....

 

[johng]

Yes I've got lock washers on and I'm confident I torqued them all up (it was on my list too) Having said that getting at the front upper arm bolts is nearly impossible with radiator and shroud fitted

need to torque front a arm bolts when at ride height and again after a few miles

12/12/2019​

 

[Oneball]

Had a guy called Chris Cook come up today to do some stripe painting on the sides, looks like a race car now.

 

[johng]

That looks good, but what does it sound like? Any progress on the silencers?

 

[Oneball]

That looks good, but what does it sound like? Any progress on the silencers?

The new parts hadn’t turned up last week, I’ve not checked this week but the BH has gotten in the way so maybe next week.

 

[johng]

Are you planning on taking it to the Nationals this year? Would be great to actually see it (and hear it!)

 

[Oneball]

Are you planning on taking it to the Nationals this year? Would be great to actually see it (and hear it!)

Sorry thought I’d replied before. If the exhaust sorts the noise I hope to be at Shelsley on 16 July.

 

[johng]

And the Nationals on the 17th? What are you trying with the silencers this time?

 

[Oneball]

And the Nationals on the 17th? What are you trying with the silencers this time?

Silencer down the side then tucks in in front of the rear wheels and two boxes at the back. Bit like this

 

[johng]

How can that not work