Sign in to follow this  
lookforjoe

Hussein's 1998 V70 Xr : The Force Awakens

Recommended Posts

Hey, thanks for the link. I did look at their sheathed hose, but if you look at the specs, that's only rated for 50psi!

This is what I'm looking at in terms of hardware to fit 3/8 hard line from the Aeromotive FPR to the 3/8NPT port on my rail:

Picture1-4.png

Just have to check locally before I spend 10 bucks to ship such small items

Been reading up on JIC and AN fittings - it seems JIC & AN are the same 37º fittings, just AN are just manufactured to a higher standard/closer tolerances, unless I'm misunderstanding. I'll need to see if the standard flaring tool used for brake and fuel lines does 37º flares, that's what I will have access to.

AN-06 & JIC-06 apparently are both 9/16-18, AN-05/JIC-05 would be 1/2-20, as TMM9 described in his RN thread.

Share this post


Link to post
Share on other sites

H,

Maybe you can help me understand your thinking,

From what I remember of the 2 pump systems from years back, the in-tank pump was a high volume, low pressure pump used to supply fuel to the main pump, which would raise the pressure as needed. The connecting hose was usually 15-17 mm low pressure hose.

You are putting in the tank the DW300 pump which feeds to another external high pressure pump. The second pump is used to raise the fuel volume to the rail to keep fuel pressure from dropping. The second pump cant provide more volume than the in-tank puts out.

It seems to me that the second pump can only restrict flow, raise fuel temp, etc. Especially with the small inlet on the second pump.

I would think your new in-tank by itself should be enough, given it's specs.

Am I missing something?

Rod

Share this post


Link to post
Share on other sites

H,

Maybe you can help me understand your thinking,

It seems to me that the second pump can only restrict flow, raise fuel temp, etc. Especially with the small inlet on the second pump.

I would think your new in-tank by itself should be enough, given it's specs. Am I missing something?

Rod

The old systems used 10mm (OD) nylon feed line at best, then 8mm forward of the external pump.

Maybe I don't need an external, but I don't see it hurting. Perhaps you are on to something with this thought, however I haven't seen I mentioned in any of the dual pump setups I've looked at - some using dual 044's - which amount to much the same thing, I would suppose. You're thinking the pumps will be at odds with each other? The pump inlet is about 14mm (M18 union) - the elbow fed from the sender/ in tank (or straight barb, depending on how I orient it) is 8mm ID. I can't see it being an heating issue. The lines from the pump forward will all be 10mm (8mm ID), vs the stock 6mm, including the return.

I can always create a line splice that eliminates the external pump, either for initial testing , or subsequent removal.

Since the aeromotive FPR is 1:1 (I'm presuming without the 1bar cap of rise in pressure seen with stock FPR's, since it states up to 70psi to the rail)? I'm assuming I can actually lean out my WOT and upper fuel cells as a result.

Since I can data log FP from the rail, it should be easy to tell if I have any issues running two pumps as planned.

Share this post


Link to post
Share on other sites

Its nice having all that data graphed, with all those sensors. Tho for me its confusing to look at, my eyes aren't as sharp as they used to be :(

That 10mm line will be a big help. As you said in the other post, using hard line or braided SS is much more bulletproof and trouble free than rubber hose.

By heat, I was thinking about the second fuel pump, just pumping, without any increase in volume or pressure.

A coupling in the middle would make things easier later on.

I've seen 2 pumps run in parallel, doubling volume before, but not 2 pressure pump in series.

Just a note, I'm very impressed with your build, and your method of doing things!!

Rod

Share this post


Link to post
Share on other sites

By heat, I was thinking about the second fuel pump, just pumping, without any increase in volume or pressure.

A coupling in the middle would make things easier later

Rod

Thank you for the input. I will add a coupler (or alternate line) for bypassing the external pump - easier to plan for that up front. I don't want to end up with any unnecessary complications.

Share this post


Link to post
Share on other sites

drawing for over/under motor hard line

IMG_1910.jpg

wondering whether to consider aluminum line - I can get that in 10' roll from Summit (100034ERL)

I could also delete the right angle main pump outlet and use an M12 to AN-08 male fitting (that I got with the pump) then a Derale 98201 AN-08 female to 3/8" barb adaptor, so I can just run the outlet as a straight shot to the fuel filter....

  • Upvote 1

Share this post


Link to post
Share on other sites

uh what? the fpr on the edge of the pic there?

Share this post


Link to post
Share on other sites

The oil caps

Share this post


Link to post
Share on other sites
uh what? the fpr on the edge of the pic there?

Dual IPD filler caps, lol

  • Upvote 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this