[Mk2] [Turbo] wolfcatz fuel rail/injectors pckg

[planted1]

Well , i bought my Wolfkatz and top feed injectors from Tim,
ive also imported items direct from the USA,
i have to say that their are hidden costs involved which when taken into
account means the difference isnt all that great,if importing over local.

Also,should i have a problem,i know that xxxx are only a call away,wheras if i have to send something back to America i could be without it for several weeks.
Tim was most helpfull in assisting me to get the right combination.

Lastly,surely its better to support local MR2 specialists,
as i see it you may get a few quid knocked off for buying direct(i have before)but should you wish something urgently,like next day,
you can only do so if they are in buisness,
Support those that support the Mr2 community.

[Tim-B]

i've not commented on this thread again as i don't want to get draw into arguments on this forum that can be used against me.

But just wanted to say thankyou for that bud, thats my point. when it comes to sales i know most of us UK suppliers do our best to keep prices down on overseas products. Yes theres an increase but thats not our fault its the government that rips us off like everything else

Tim

[^Trickster^]

Back to the topic.

I ran 360rwhp with the stock rev 3 rail and 850cc sard injectors.

I only actually swapped to a wolfkatz rail because i built another engine using a rev 1 block and head therefore the rev 3 rail did not fit, I have 425rwhp with the sidefeed.

The rev 3 rail has little pressure drop across it and id say would be fine for 400rwhp if not more, but I will be changing my setup to a top feed system this year and it is what I would recommend buying if going anything other than stock as its cheaper in the long run I find.

HKS stuff is undoubtably good, but its just too pricey, Wolfkatz products are extremly well tested and very high quality with good customer services from Garrett.

Graeme

[MR-S Turbo]

Mine is still running the stock Rev 3 fuel rail with 850cc injectors and runs 400rwhp.

[Harry]

Mine is still running the stock Rev 3 fuel rail with 850cc injectors and runs 400rwhp.

Presume with an ECU and so on did you do mapping with AFR and other data etc? Know Ryan run two cylinders slightly richer via the mapping.

Sounds good

[MR-S Turbo]

AFR is on the very safe side. ECU is a HKS F-Con.

[^Trickster^]

You only need to richen up cylinders 2 and 3 when using a centre feed manifold, not neccesarily the stock one, any atermarket centre feed manifold with favor the 2 middle cylinders because theres an extra 90 degree bend for the 2 out cylinders, this is why sidefeed give much better distribution regaurdless of cylinder 4 being further away, its bends that kill flow.

I have a centre feed RMR and still richen up the 2 middle cylinders.

Graeme

[mark239]

I have the wolfkatz rail and a set of 1000cc topmounts.

I do have 2 reservations about it -

(i) The way the machined injector adapters seal into the head is a bit micky mouse - one tiny wee o-ring that if you get any backfire will blow off, and you'll need to remove the rail to replace (Although you wont have this problem if you don't get any backfires whilst messing around with timing etc during the run in phase ) What I have done now is turn out a larger groove in the lathe and fitted a far thicker rubber seal.

(ii) The way it mounts on to the head - It bolts on with two right angled brackets on to the outermost two OE fuel rail mounts - and I had to do quite a bit of adjusting to the height of the spacers to get a uniform pressure applied to all injectors - a bit more adjustment in the bracket would be nice, and maybe 3 mount points? Just a thought

[planted1]

Just pressure tested my fuel system today,which consists of,
walbro 255 pump,wolfkatz rail and 870cc top feed injectors,jic hoses to and from rail,fuel pressure regulator and gauge.

I was a bit wary after Marks comments on the o-ring seal,so
after shorting fp+b in the diagnostic port,with ignition on,i tested the system to 7bar.

The only leak at that pressure was on the excess fuel return line fron the bottom of the fuel regulator.
None of the injector seals or hoses leaked.
I then lowered the pressure to 3.5bar and will check again later.

Quite chuffed really as i fitted them all myself

[^Trickster^]

planted

If your running a walbro pump etc I would highly recommend rewiring the fuel pump with heavier cable, the stock wiring is a bit crappy for the walbro with your mods.

Graeme

[Harry]

You only need to richen up cylinders 2 and 3 when using a centre feed manifold, not neccesarily the stock one, any atermarket centre feed manifold with favor the 2 middle cylinders because theres an extra 90 degree bend for the 2 out cylinders, this is why sidefeed give much better distribution regaurdless of cylinder 4 being further away, its bends that kill flow.

I have a centre feed RMR and still richen up the 2 middle cylinders.

Graeme

Good job Graeme,

[mark239]

Just pressure tested my fuel system today,which consists of,
walbro 255 pump,wolfkatz rail and 870cc top feed injectors,jic hoses to and from rail,fuel pressure regulator and gauge.

I was a bit wary after Marks comments on the o-ring seal,so
after shorting fp+b in the diagnostic port,with ignition on,i tested the system to 7bar.

The only leak at that pressure was on the excess fuel return line fron the bottom of the fuel regulator.
None of the injector seals or hoses leaked.
I then lowered the pressure to 3.5bar and will check again later.

Quite chuffed really as i fitted them all myself

I mean the o-ring in the machined adapter that sits next to the head - the rest of them are fine. no amount of pressurising of the fuel rail will make that o-ring fail, since there is no pressure being applied on it by fuel

One backfire and I lost 2 o-rings

[planted1]

Mark239,
oh ,i see what you mean,nice one

Graeme,
Please say you dont mean the wiring on the pump itself
Damn tanks been in and out more than i have.

[^Trickster^]

You can get to the connector for the actual pump from underneath the ashtray, its the wiring that goes to it which is very long and small gauged and the walbro demands a lot of current.

You can use the original circuitry to wiring in a relay with larger grade wiring direct from the battery, or you can wire it direct from the battery with its own switch which is what I have done.

Graeme

[planted1]

Thanks graeme
i understand what you mean,many thanks.

[^Trickster^]

I was thinking about this today and if you decide to use the stock controls to control a relay you will also need to do the modification to make the pump circuit run 12v al the time as the stock system swicthes between 2 voltages, its not often i work on stock ones so i forget these things lol

Graeme