[Formulajones]

I'm of a different thought process and prefer a bigger pump just because I don't like to revisit things. It's why I'm always preaching a 1/2" return line so you don't get that pressure creep or a fountain of gas out the vent, lol. Many make the mistake of too small of a return and also don't consider that the length of the return also is part of the formula. If it's a long return, best to go up a size.

I've run 450 lph pumps for more than a dozen years on a 600 HP setup knowing I had room to grow. Now dropping in a 786 HP 598 and I don't have to touch the fuel system.

[78w72]

Originally Posted by 65 Lamnas

This is what I'm looking at:

https://rickstanks.com/shop/#!/Ricks...gory=139929319

Are you buying the whole top hat from ricks? Or just showing the 255lph pump?

Ive seen a few other in tank pump set ups but never seen the ricks top hat, not much of a description on that link for details on it. Is there a certain reason you picked that vs a tanks inc set up that uses a baffled tank vs the hydromat shown on the ricks pump? Tanksinc offers the same walbro pumps.

[65 Lamnas]

Originally Posted by 78w72

Are you buying the whole top hat from ricks? Or just showing the 255lph pump?

Ive seen a few other in tank pump set ups but never seen the ricks top hat, noy much of a description on that link for details on it. Is there a certain reason you picked that vs a tanks inc set up that uses a baffled tank vs the hydromat shown on the ricks pump? Tanksinc offers the same walbro pumps.

I've dealt with Ricks Tanks in the past. Had them build a custom stainless tank for my 67 Lamnas 535. I don't like the Tanks Inc stuff...their tanks have a rear vent (very poor design) and the inlet/outlet fittings are 1/4"NPT (too small). The Rick's hat is equipped with -8 ORB for inlet and outlet (plus there's an AUX port) and tank vents are in the front of the tank.

[JLMounce]

Originally Posted by 65 Lamnas

I've dealt with Ricks Tanks in the past. Had them build a custom stainless tank for my 67 Lamnas 535. I don't like the Tanks Inc stuff...their tanks have a rear vent (very poor design) and the inlet/outlet fittings are 1/4"NPT (too small). The Rick's hat is equipped with -8 ORB for inlet and outlet (plus there's an AUX port) and tank vents are in the front of the tank.

FWIW on my tanks inc tanks, that I've installed, one on my 69 bird and 1 in my wife's 71 chevelle, both were front vent.

[78w72]

Originally Posted by 65 Lamnas

I've dealt with Ricks Tanks in the past. Had them build a custom stainless tank for my 67 Lamnas 535. I don't like the Tanks Inc stuff...their tanks have a rear vent (very poor design) and the inlet/outlet fittings are 1/4"NPT (too small). The Rick's hat is equipped with -8 ORB for inlet and outlet (plus there's an AUX port) and tank vents are in the front of the tank.

Thanks for the info... im gathering as much info as I can on in tank pump options while i consider changing my robbmc set up.

A few others offer in tank retro fit set up, holley using the hydromat, Ricks I just now saw and aeromotive, aeromotive has a in tank module that has a return regulator built in to it so no need for a long return line, they also offer one with a long pick up tube that lets you put it anywhere in the tank you want.

So far the tanks inc set up seems like the best option, based on price & features, the internal baffle is nice for auto x or drag racing, can get their basic set up with tank for about the same price as the ricks top hat so thats a big factor for me.

[Formulajones]

Originally Posted by JLMounce

FWIW on my tanks inc tanks, that I've installed, one on my 69 bird and 1 in my wife's 71 chevelle, both were front vent.

Yup, Ive used them for years and have never seen a rear vent.

[Formulajones]

Dont get too hung up on a return less system just because you like the idea of not running an extra line. There are a lot of benefits to having a full length return line.

Many don't do it just to save a little time and money but in the grand scheme it's honestly not a bunch of money. You're talking another 16-18 feet of hose and a couple more fittings. That shouldn't break the bank.

[78w72]

I agree a full return is best, just mentioning the aeromotive built in return on their retro fit module in case anyone is interested in that, seems like a good idea if it works as described.

[HWYSTR455]

I did a thread years ago on an install, many topics were covered in that thread, some may find it useful:

https://forums.maxperformanceinc.com...d.php?t=749614

There were changes along the way, lessons learned, etc, so it's worth scanning to the end of the thread.

Personally, I feel the fuel system should be designed for any potential power level, and not just the current phase of build of a car. A bypass return, with a line size matching the feed is the best approach.



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[HWYSTR455]

Originally Posted by 65 Lamnas

I've dealt with Ricks Tanks in the past. Had them build a custom stainless tank for my 67 Lamnas 535. I don't like the Tanks Inc stuff...their tanks have a rear vent (very poor design) and the inlet/outlet fittings are 1/4"NPT (too small). The Rick's hat is equipped with -8 ORB for inlet and outlet (plus there's an AUX port) and tank vents are in the front of the tank.

Just to comment, 1/4 NTP inside diameter is .429, nearly equivalent to 1/2 and -8 hose and hard line.

https://www.ultimatewasher.com/dimensionschart.htm

With higher psi than 7, it will flow more, like in an EFI setup.

In that thread I posted the link to, I measured the 1/2" aluminum hard line, as well as the non-pump module Tanks Inc offers, and both came in around .80", look at posts 52, 53, and 54.

It kind of doesn't matter, since the 1/4 NTP fitting would still be the most restriction.

.

[HWYSTR455]

Couple examples from the tribute build thread. Since the psi is higher than a carb setup, there's no vapor lock concerns from heat.


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[JLMounce]

Originally Posted by HWYSTR455

Just to comment, 1/4 NTP inside diameter is .429, nearly equivalent to 1/2 and -8 hose and hard line.

https://www.ultimatewasher.com/dimensionschart.htm

With higher psi than 7, it will flow more, like in an EFI setup.

In that thread I posted the link to, I measured the 1/2" aluminum hard line, as well as the non-pump module Tanks Inc offers, and both came in around .80", look at posts 52, 53, and 54.

It kind of doesn't matter, since the 1/4 NTP fitting would still be the most restriction.

.

Piggy backing off of that, the Walbro 255 has a pump outlet size of 8mm, or nominally .314 inches. The 1/4 NPT fitting is not the restriction, the pump body itself is.

[Formulajones]

Yup, often overlooked the smaller pump bodies like the 255 have a smaller orifice than the 1/4 npt's, and even that isn't much smaller than the -8 line I use which is .450" inside diameter anyway.

I've been running well over 700hp na setups through those 1/4 npt's both carb and EFI and has worked flawless for years.

[65 Lamnas]

Originally Posted by Formulajones

Yup, Ive used them for years and have never seen a rear vent.

Originally Posted by JLMounce

FWIW on my tanks inc tanks, that I've installed, one on my 69 bird and 1 in my wife's 71 chevelle, both were front vent.

I was wrong about the rear vent thing on the Tanks Inc piece. I think I've looked at too many and got confused.