Megane R26/225 uprated fuel pump options

jenvey wasn't interested in a group buy i did ask

 

Ah, thats a shame

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Did you get the pump fitted Wednesday dan? If so how was it? Did they do it okay? And isit running better?



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Ah that's annoying but atleast you know yours is okay I suppose..

Dows the Bosch unit you mentioned add more pressure to the system? Isit the 5 bar one like the warbo 255?

The only reason I'm interested is for precaution too..


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When my new pump went in there was no new loom or anything else on my invoice. So either:

Renault are lying/have no idea what their talking about (perish the thought).
My garage absorbed the £90 cost and didn't mention it.

I really must have a look at what's actually been fitted to my car. Good thread this!

 

Agreed really good thread...

I think I read on another thread though an answer to the problems on the fuelling side, I will find it and copy/paste, someone on here who is doing a build thread...

Also why are we talking about fuel rails since I thought the Clio 172/200 rail fitted and provided better feed?

 

http://www.rsmegane.com/threads/uprated-fuel-system.13397/#post-145675

 

haha you've started something here Danith you must finish it! (-;

Based on the above I propose Bosch (or whatevers available) direct replacement 225/R26 fuel pump, bypass the intank fpr and use the 250 rail with fpr attached? I assume this will fit the 225 intake manifold?

Has anyone who's opened up the 225 sender unit uploaded pics?

 

I can take my dead sender apart and upload pictures if anyone's interested. Never taken one apart before but how hard can it be!

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Be good to get a visual and maybe some dimensions on the fuel pump . . .

Plus the test if you can get it apart without breaking it!

 

Challenge accepted, I will try to get mine apart without breaking it! Is yours a phase 1 pump danith?

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Just to clarify, the DW65C is a direct drop in replacement.

I have the Bosch OEM unit in my cupboard. Happy to take some pictures of it and measure it when I get home

 

What output has the oem pump? Can it deliver more pressure if fpr is changed? I

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Ok great . . . I wonder if the DW65C pump could cope if the standard fpr was bypassed (shut off) and using a higher pressure fpr on the Clio or 250 rail . . .

Next question do we know which of the above fits the 225 inlet manifold . . .

I hope @ianplymouth could comment on how he's getting on with similar set-up . . .

 

Hi Rich
I am still running the standard 225 fuel pump that has now done around 123k miles, my car has the 250 engine in it and running the standard 250 injector rail, this has a centre feed and is square and made of stainless steel, i am sure this would fit a 225/230 inlet manifold, all i did was remove an O ring from inside the fpr valve and not connect the pressure hose so it would run on the standard 3.5 bar pump.

I had it remapped at RS and Paul said nothing about upgrading the system i have, but this thread is now making me think of some sort of modification to my car, the down side to that is i would then have another round trip of 660 miles to have a tweek on the ecu.

 

Thanks for the response Ian.

The pump must be capable of more than 3.5 bar because I thought you said the 250 fuel rail had a 5 bar fpr attached?

What power did your car make at RST? I assume you're also running 630 injectors?

What modification are you thinking? I think you've nailed it with the fueling . . .

 

Hi Rich
By taking out the O ring the fpr doesn't work it puts the full fuel pressure in 3.5 bar

It made 305 bhp but i had rainsport 3's on and they were so hot on the rollers Paul recons i was loosing a good 10 hp through the tyres and yes 630 injectors.

I am about done with the modifications (for the minute ) Paul said another £2k for 50 hp so i don't think it's worth it, it has a very wide torque range pulls like a train from 2500 rpm to the limiter and i don't want to spoil that

 

Apart. Any part numbers, sizes etc anyone needs let me know.

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Did u manage not to brake it?

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Sort of. Top comes off easily by levering these tabs and then the regulator is held in with two screws

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Bottom bit unscrews sort of but lost my rag and cut a piece off. Goes back together fine and if you force it it will definitely break

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And there's the filter. Mmmmm, petrolly.

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That the little red thing?

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Gauze thing on the right. Red thing looks like a valve of some description

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Ah yes, did look like plastic on small screen, had to zoom in to see it. Still not much of a filter there.

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It's crap. It was that grubby when I pulled it out, it's not just general workbench muck

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Yeah I know what you're saying it doesn't sound easy the next 50 hp . . . mine made 302, I assume your running the 250 turbo as well.

I thought since the FPR is disabled (O ring removed) the fuel pump would provide higher pressure up to the FPR on the 250 rail (which is up to 5 bar isn't it?) . . . so what you're saying is the standard pump is only capable of 3.5 bar?

 

Great effort buddy!!!

I'm sure this will come in handy . . . I wonder how much it is to replace the housing, or if it can bought seperate . . .

 

Thanks buddy . . .

Where did you purchase the DW65C pump? Do you have a link?

Do you know what fuel pressure it's capable of running?

 

FYI

"Fuel rail from Megane 3RS don't fit directly. If You want to install it, You will need to cut mountings on rail and weld in other place."

Thanks @Shymek

 

@ianplymouth do you have a picture of the 250 inlet and rail?

also has anyone got a cheap 225 inlet?

 

Hi Matt
What is it you a picture of ??? the whole thing or just a certain part ??
This is all i really have pic wise of the whole thing


This one i bought off eBay for £40, it came with the injectors and fuel rail

 

@Trophyboy

 

Anyone know if a fuel pump from a 1.6 has the same 3.5 bar fpr in the pump as a sport model?

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