Re-routing front brake lines?

[PeterAllen]

Thinking of re-routing the front brake lines as I'm a bit concerned that heat from the V8 extractors might be an issue with brake fluid temperature. I'm also surprised that the OEM lines run under the engine rails and are somewhat exposed to road debris.

 

Is there some engineering/registration issue (possible chaffing) with running the line through the inner guard, with a grommet to protect the line, to finish at the standard hose connection point?

 

I've also thought of passing the line through the inner guard close to the firewall, then along the top of the ridge/lip on the outside of the engine rail, to finish at the standard hose connection point.

 

Any thoughts?

[PB260Z]

Gidday Peter

 

FWIW My old XY 4X4 Ute had the pipes running the inner guards.

So in my opion as long as the pipe has a grommet and doesn't foul any of the components all should be good.

 

Cheers

 

PB

[nat0_240_chevZ]

go for it pete,

im doing much the same with my lines too,

obviously commom sense needs to be applied, but for someone like yourself you sure seem to be devils advocate when it comes to making any changes.

 

Yes grommet or even a fixed sleeve with rubber liner as Ive seen used to run brake lines and abs electrics through also would be quite suitable.

Ill be sending my lines i dare say straight down through inner fende then up over in the tunneal area, with appropriate shield for protection from any lost drive train components along the way.

Im sure heatshields and debris guards where req'd would not go astray.

 

oh i forgot to add, my reasoning, is i have closed up non essential holes in the engine bay.

going for the "clean" looksies.

nat0

[PeterAllen]

go for it pete,... obviously commom sense needs to be applied, but for someone like yourself you sure seem to be devils advocate when it comes to making any changes...

 

Last week I went for a drive in a 500bhp Cobra, WOW, unbelievable performance. Anyway, the chap told me he got knocked back on 76 items when he took it for rego - despite having an engineer approve it. I just don't want too many such issues when (if) I take it in.

 

Back to the brake lines. I just took a look at my daughter's 2006 Corolla and it has the line through the inner guard (see photo) and they appear to have an extra protective coating on them. It kinda makes you wonder why Datsun went the 'under rails' route with the S30s. It also gave me the idea that there is no need to run the lines down to the rails in the first place. My plan now is to keep them up higher on the guards and then pass them through.

[benny]

Just make it look factory and you will be hard pressed to find someone that knows different!!

[RB30X]

I never had any issues with heat from mine if that helps and it's almost exactly the same set up. Stop nit picking and concentrate on ticking items off your to-do list and stop making that list longer. 

[PeterAllen]

Tim - I don't expect a Queensland mechanic to understand how an 'automotive ar-tist' goes about creating a work of art, however, you would be astounded at progress in the last three months!

 

Big sills with internal bracing all welded in.

Engine bay painted

Interior painted

Stonechip on

Holden diff (with revised front mount design) fitted.

Holden booster and clutch m/c fitted. etc, etc.

 

How's the fishing going... not bored yet?

[RB30X]

Fine then I'm seeing quite a bit of progress. From now on you have to cross off five items from your to-do list, for every one you add on. Have you driven it yet??

[peter t]

Tim - I don't expect a Queensland mechanic to understand how an 'automotive ar-tist' goes about creating a work of art, however, you would be astounded at progress in the last three months!

 

Big sills with internal bracing all welded in.

Engine bay painted

Interior painted

Stonechip on

Holden diff (with revised front mount design) fitted.

Holden booster and clutch m/c fitted. etc, etc.

 

 

 

 

 

How's the fishing going... not bored yet?

 

 

 

At least yours is built not bought Peter.

[Six_Shooter]

Last week I went for a drive in a 500bhp Cobra, WOW, unbelievable performance. Anyway, the chap told me he got knocked back on 76 items when he took it for rego - despite having an engineer approve it. I just don't want too many such issues when (if) I take it in.

 

Back to the brake lines. I just took a look at my daughter's 2006 Corolla and it has the line through the inner guard (see photo) and they appear to have an extra protective coating on them. It kinda makes you wonder why Datsun went the 'under rails' route with the S30s. It also gave me the idea that there is no need to run the lines down to the rails in the first place. My plan now is to keep them up higher on the guards and then pass them through.

 

In these two pictures the blue line is not lining up.

 

Where you show it on the wheel side, is actually through the frame rail.

 

Why complicate matters by doing this?

 

When's the last time you heard someone with an issue concerning the brake lines and road items damaging them on an S30? For me that would be a NEVER. The brake lines are actually quite high from the road surface, and installed in ways that other items will protect the lines.

 

You have to watch when passing brake lines, well any tubes/lines through bulkheads, because as the pressure rises the tubes will stretch and move around. If they are restricted at the wrong point, you can actually create problems, instead of get rid of any.

[zed240au]

Good to see your back into the car Peter Was disappointed for u when I saw u put it up for sale

I re ran my brake lines years ago trying to tidy engine bay for show ended up drilling holes below master cylinder and then mount brake switch and line connections in wheel well has worked fine with added bonus of less heat on brake lines

Did make a cover plate to mount over lines and switch for protection from rocks but don't really think its that necessary

Engineering didn't even notice it was different to normal

 

Mick

[PeterAllen]

In these two pictures the blue line is not lining up.

 

Where you show it on the wheel side, is actually through the frame rail.

 

Why complicate matters by doing this?

...

 

Six-Shooter, you're correct about the line passing through the rail, I hadn't taken a close examination. However, the longtube extractors (headers) on the LSx run too close to the rail to retain the original loop under so I'll still have to run along the rail and pass through the inner guard. I'll then have to do a bit of a down and up loop near the bracket. I will put a bit of heatshrink on the line where it passes through the guard and on the bit inside the wheelarch for debris protection.

 

Mick - It might have been you who planted the idea in my mind. Hardly any R&D left now, just fit and paint the bodywork and then basically detailing the parts as it goes back together.

 

Tim - It's becoming harder and harder to find things to PYO but I'm now thinking of making up the rear section inner trim panels out of aluminium - it should put the completion date back 3-4 months!

[Six_Shooter]

I have not heard of or seen anybody with an LSx swap having that issue. Especially since where the brake lines wrap around the frame rail is almost inline with the crank pulley, well in front of the headers you are using.