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Another little mod
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chevymad
Master B


Joined: 11 Jan 2004
Posts: 5476


1987 Pontiac Formula

PostPosted: Sun Jul 11, 2004 3:42 pm    Post subject: Another little mod Reply with quote

Had a spare minute today to work on the car. Been putting in hay.. Crying or Very sad Anyway, on the 87 LG4 the original fuel lines have quite a long stretch of rubber hose. The original lines were good quality, but for some reason the gates rubber fuel line keeps cracking on my rigs. Both the truck and the car, so even though their close to the header on the car, I dont think its the heat causing it. Fuel hoses were only lasting me about 6 months before I felt they were looking dangerous. So here's what I came up with for a fix.




No that's not "Spectre" Razz

That's real stainless steel braided, teflon lined, silicone hose. Earls to be exact. Pretty easy to work with really, you can even reuse the fittings. I had to take one off and reuse it allready because I didnt like how I routed the hoses at first. Only drawback is that its kind of expensive. Almost have $70 into it. Shocked But I do have some hose leftover, so I might order some more fittings and do the truck too.
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Schultzy89GTA
M.R.A. (11sec Club)


Joined: 08 Jan 2004
Posts: 4417
Location: Gresham, OR

1989 Pontiac GTA

PostPosted: Sun Jul 11, 2004 7:04 pm    Post subject: Reply with quote

Very nice Mr. B.

You are amazingly productive. Put more hay in AND did the fuel lines. I on the other hand took a nap. Some crazy bastard kept me out til the crack of dawn. Cool

-Schultzy

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Red Sled: 89 GTA, 383, TKO, N2O

12.73 @ 109.39, 1.793 60 \ 11.794 @ 121.16, 1.62 60 (old combo)
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Dewey316
The Lama


Joined: 08 Jan 2004
Posts: 7295
Location: Bringing the tech

1990 Chevrolet Camaro RS

PostPosted: Sun Jul 11, 2004 7:08 pm    Post subject: Reply with quote

Looks great B. the peace of mind from the braided hose will nice.

(i'm pretty lazy too. i mowed the front lawn. and took a nap.)
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92RS shearn
Member


Joined: 01 Jul 2004
Posts: 55
Location: Seatac, WA


PostPosted: Sun Jul 11, 2004 7:45 pm    Post subject: Reply with quote

Looks good man, its ironic I just read about the samething over at TGO, he just redid the fuel lines with SS lines as well if anyones interested:

http://www.thirdgen.org/techbb2/showthread.php?s=&threadid=196540


Chris
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Flyte risk
Member


Joined: 21 Jan 2004
Posts: 55
Location: Aloha OR


PostPosted: Mon Jul 12, 2004 6:02 pm    Post subject: Reply with quote

$70 !!!!

Should have said something, I have a source for AN stuff.

Check out http://www.sweetperformance.com/index.htm . I deal with the guy through his personal email so I can probably do a little better then the website if it adds up to anything significant. I remember when he first started selling the fittings and he quoted me 40% less then anywhere else I could find. Everyone I've heard from thats seen his stuff claims it's every bit as good as XRP and better than aeroquip.
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Wolffy
Member


Joined: 22 Jan 2004
Posts: 375
Location: Spokane


PostPosted: Mon Jul 12, 2004 6:31 pm    Post subject: Reply with quote

and i just happen to need fuel lines made up too
i need to find out what size fittings i need & then maybe ill get ahold of you, if i cant find someone to make them locally for a decent price, the main place in town wanted about $60 just for 6 feet of braided 3/8 fuel line, not ends included
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Flyte risk
Member


Joined: 21 Jan 2004
Posts: 55
Location: Aloha OR


PostPosted: Mon Jul 12, 2004 7:07 pm    Post subject: Reply with quote

For fuel lines I'd run -8. Easy way to figure size for AN, -4 is 1/4" . -8 is 1/2" and -16 is 1" Notice the pattern?

-6 would be enough for most people but the little extra vs. the cost of finding out you should have gone with -8 the first time is worth it to me.

Also if it's just one or two lines you need and you know the exact length I can probably have him put the ends on for the cost of a few cold ones.

Eh, if your really wanting to get out on the el cheapo at one time he had some fittings that were sized for metric wrenches, same inner diameter just metric flats that he was pretty much giving away for the $$$ he wanted.
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TecherB
Princess B


Joined: 14 Jan 2004
Posts: 390
Location: Some place between gresham and portland


PostPosted: Mon Jul 12, 2004 8:30 pm    Post subject: Reply with quote

looks good B but their might be a little too much red in that engine bay
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chevymad
Master B


Joined: 11 Jan 2004
Posts: 5476


1987 Pontiac Formula

PostPosted: Mon Jul 12, 2004 8:55 pm    Post subject: Reply with quote

Was going to go with 8 Mike, but if you start looking for the fittings, you'll find they dont make the 3/8s tube to 8an hose. Only to 6an. 3/8's hose is 0.375, 6an is 0.343. So it's right between 5/16 and 3/8s hose.

Now if I was running a big block there'd be 1/2" line all the way to the tank. But this little 327 will do just fine with this.. especially since there is a pusher pump in the tank and a 120gph carter at the motor. 87's had both the electric intank pusher and a mechanical pump on carbed models.
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Twilightoptics
Hardcore (12sec Club)


Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA

1987 Chevrolet Camaro IROC-Z

PostPosted: Tue Jul 13, 2004 8:10 am    Post subject: Reply with quote

Havn't seen a N/A 23º headed small block that needed more than -6
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Flyte risk
Member


Joined: 21 Jan 2004
Posts: 55
Location: Aloha OR


PostPosted: Tue Jul 13, 2004 4:17 pm    Post subject: Reply with quote

Are you referring to AN to NPT fittings Brandon? I know Dave has those to go from 3/8" NPT to -8 AN, for that matter he's got 3/8" to -10.

Paul, if you've seen a winged sprint car that runs methanol, or any decent engine on methanol then you've seen a N/A 23º head SB that requires -8 or better. Really it's almost the same as exhaust, how may really need dual 3" pipes? Better to go one size up then one size small or just enough.
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Twilightoptics
Hardcore (12sec Club)


Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA

1987 Chevrolet Camaro IROC-Z

PostPosted: Tue Jul 13, 2004 4:49 pm    Post subject: Reply with quote

Flyte risk wrote:
Are you referring to AN to NPT fittings Brandon? I know Dave has those to go from 3/8" NPT to -8 AN, for that matter he's got 3/8" to -10.

Paul, if you've seen a winged sprint car that runs methanol, or any decent engine on methanol then you've seen a N/A 23º head SB that requires -8 or better. Really it's almost the same as exhaust, how may really need dual 3" pipes? Better to go one size up then one size small or just enough.


:: cough :: methanol :: cough ::
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chevymad
Master B


Joined: 11 Jan 2004
Posts: 5476


1987 Pontiac Formula

PostPosted: Tue Jul 13, 2004 5:02 pm    Post subject: Reply with quote

No.. not an to pipe.. thats easy. AN to steel tube. The factory line has nothing but a swelled hose nipple to hook on to. Earls makes a connector that hooks their hose to a smooth steel line, but only for -6.
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Midnight Sun
Member


Joined: 10 Jan 2004
Posts: 606
Location: Ellensurg, Washington Name: Eric Haugland


PostPosted: Tue Jul 13, 2004 5:35 pm    Post subject: Reply with quote

Could I use this stuff to replace the coolant hardlines that run from my 700r4 to the radiator?
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Flyte risk
Member


Joined: 21 Jan 2004
Posts: 55
Location: Aloha OR


PostPosted: Tue Jul 13, 2004 5:53 pm    Post subject: Reply with quote

Twilightoptics wrote:

:: cough :: methanol :: cough ::


Ok, I confess I was trying to keep it simple. Using alky made that easy.

Break out your calculators boys and girls and we can compare the specific gravity of pump gas, race gas and avgas. Then we'll delve into why you would need more flow with a lower weight fuel. Afterwards it's onto why someone would want to run a higher quality 100/130 ocatne fuel (thats cheaper than 92 oct pump gas). Finally if your up to it we can get into fluid and thermo-dynamics where I can show you a few hp difference (not much really, maybe 1 or 2%) from using a size larger than adaquate.

Bottom line is I never said -6 wasn't enough, just that 8 is better.
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Flyte risk
Member


Joined: 21 Jan 2004
Posts: 55
Location: Aloha OR


PostPosted: Tue Jul 13, 2004 5:57 pm    Post subject: Reply with quote

Midnight Sun wrote:
Could I use this stuff to replace the coolant hardlines that run from my 700r4 to the radiator?


Sure, don't see why you'd want to though. The money would be better spent installing an actual tranny cooler in front of the radiator.
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Dewey316
The Lama


Joined: 08 Jan 2004
Posts: 7295
Location: Bringing the tech

1990 Chevrolet Camaro RS

PostPosted: Tue Jul 13, 2004 6:00 pm    Post subject: Reply with quote

Flyte risk wrote:
if your up to it we can get into fluid and thermo-dynamics where I can show you a few hp difference (not much really, maybe 1 or 2%) from using a size larger than adaquate.


That could get touchy quick. because there are outside variables that would work in the -6 lines favor. i bet in the end it would be a wash.
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rjmcgee
The Hammer


Joined: 08 Jan 2004
Posts: 2328



PostPosted: Tue Jul 13, 2004 8:09 pm    Post subject: Reply with quote

Isn't the fuel line from the tank 3/8 ". Not much use in going with a bigger fuel line in the last couple feet which means you would need to change out the entire fuel line. Sounds like too much damn work.

Hell, I am probably making upwards of 200 hp with a 5/16" fuel supply. Very Happy
Of course the exhaust is barely bigger than that Sad

I hate this car Crying or Very sad


I need a fourth gen. Razz
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Schultzy89GTA
M.R.A. (11sec Club)


Joined: 08 Jan 2004
Posts: 4417
Location: Gresham, OR

1989 Pontiac GTA

PostPosted: Tue Jul 13, 2004 8:35 pm    Post subject: Reply with quote

rjmcgee wrote:

I need a fourth gen. Razz



NNNNNNNNNNNNNNNNNnnnnnnnnnnnnnnnnnnnnnnnnnnnooooooooooooooo!
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Flyte risk
Member


Joined: 21 Jan 2004
Posts: 55
Location: Aloha OR


PostPosted: Tue Jul 13, 2004 8:40 pm    Post subject: Reply with quote

chevymad wrote:
3/8's hose is 0.375, 6an is 0.343. So it's right between 5/16 and 3/8s hose.


rjmcgee wrote:
Isn't the fuel line from the tank 3/8 ". Not much use in going with a bigger fuel line in the last couple feet which means you would need to change out the entire fuel line.


I shouldn't have to explain this one. Brandon is correct again, AN is sized just below what would be it's fractional equivalant, the fittings are sized even smaller, almost 1/16" in some cases. So is it only me that realizes that -6 AN is smaller than the factory line? Still plenty for a mild 327 but what happens when your running a stout 383 already and want to use some giggle gas?

chevymad wrote:

...especially since there is a pusher pump in the tank and a 120gph carter at the motor. 87's had both the electric intank pusher and a mechanical pump on carbed models.


Good point Brandon, I had forgotten that. I was thinking that you had to deal with a 10" suction line then push through the restriction.

Dewey, it may come out as a wash but wouldn't it be a fun discussion?
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