The V8 Owners Forum -

Sorry for all the questions but i have yet another one,building rv8 4.6,comp ratio 8.5,m112 eaton supercharger,what injectors will be required and where to obtain from,looked on mr injector site does £87.00 each(ouch x8)sound right or are there alternatives,don't want to spoil the job by being tight but it's getting bloody expensive now,

4.6mgb wrote:Sorry for all the questions but i have yet another one,building rv8 4.6,comp ratio 8.5,m112 eaton supercharger,what injectors will be required and where to obtain from,looked on mr injector site does £87.00 each(ouch x8)sound right or are there alternatives,don't want to spoil the job by being tight but it's getting bloody expensive now,

You'd need to know what fitment of injector first.

But finding suitable ones to flow for the potential power is easy. There are literally dozens of pretty cheap new options available from the US.

http://www.fiveomotorsport.com/domestic ... injectors/

what are your power and lb/hr requirements? Like Stevieturbo says try the US, summit or jegs ship to this green and damp land

Thanks for replies,estimated hp,hoping for 3-350,don't understand llbs requirements,how many fitment types are there,i am using late rover v8 manifold,why are injectors much cheaper in us,how much to get them to uk

nigel

4.6mgb wrote:Thanks for replies,estimated hp,hoping for 3-350,don't understand llbs requirements,how many fitment types are there,i am using late rover v8 manifold,why are injectors much cheaper in us,how much to get them to uk

nigel

because the US doesnt rip off people as much as we get ripped off here.

There are dozens of fitment types, but assuming your's uses the hotwire style inlet manifold, then it's just a basic Bosch fitment.
Either of these would do. The 42lb Bosch are very common and work well.

http://www.fiveomotorsport.com/bosch-gr ... 0280155968

http://www.fiveomotorsport.com/domestic ... itemid=311

stevie thanks for that,when you order from us is there any import duty or any other hassles
nigel

All imported goods will be subject to 3.5% import duty then 20% vat on the declared value of the goods including postage costs.

other than extra cost, it isnt any hassle.

There are occasions when theses charges get overlooked, but I'd say it is rarer these days

thank you for that,will order and see what happens,still can't get over price difference
nigel

Have a look at this-
http://www.gtsparkplugs.com/InjectorSizeCalc.html

this will tell you your requirements
yes you will get import duty and vat on stuff from the states unless you can befriend someone from USFPO!

Or another vendor

http://www.racetronix.biz/items.asp?Cc= ... mNav=False

These are listed at US$35 each.

Oddly if you select to buy as 8 they charge more lol

http://www.racetronix.biz/itemdesc.asp? ... 0x&eq=&Tp=

I'm using bosch 'green giant' 42lb injectors 0280155968.
Easy straight swap for the hotwire or gems engines (I think also the thor) They are the newer multi hole type injector which gives better fuel atomisation over a much greater range of fuel pressures then the pintle type. They will easly flow enough fuel for your requirements and the connectors are also compatible with the rover wiring harness.

I'm aiming for 400bhp supercharged and they will easily flow that.

Tom.

thamks for help have ordered from 5o,this forum is great,am grateful for all the help
nigel

Been with a friend today having his 5.7 litre Ford setup on rolling road which runs quad throttle bodies. He runs 30lb injectors and was showing 370 bhp with an max injector duty cycle of 70%
Not sure if that helps at all.

My 5.2litre RV8 runs 315cc@ 3bar injectors and mede 381hp.. Fuel pressure is approx 3.8bar@full throttle and duty cycle 70% so Injectors flow approx 350cc? Made by Accel and bought from summitracing.. Set of 8 approx 300USD