+- 306oc - Peugeot 306 Owners Club & Forum (https://www.306oc.co.uk/forum)
+-- Forum: Engines (https://www.306oc.co.uk/forum/forumdisplay.php?fid=16)
+--- Forum: XUD Section (https://www.306oc.co.uk/forum/forumdisplay.php?fid=11)
+--- Thread: Quite a newbie qustion (/showthread.php?tid=9447)
Quite a newbie qustion - sam - 02-01-2013
Right feel quite stupid asking this but which is better 9mm bocsh pump or 11m? What gains do you get with a 11mm
RE: Quite a newbie qustion - Piggy - 02-01-2013
search please search...this gets asked nearly every week...Ruan is practically on echo now!
RE: Quite a newbie qustion - Eeyore - 02-01-2013
11mm from what i gather.
RE: Quite a newbie qustion - Piggy - 02-01-2013
^^^^ how did you come to that conclusion?
we dont know what turbo, IC and other mods he has....
stick a 11mm pump on a standard dturbo and its a bit pointless
9mm can get 150bhp....so all depends on what and why...
but this is discussed every week on a new thread and is in the stickied info section
RE: Quite a newbie qustion - Dicky - 02-01-2013
Quote:Maybe I'm on the blob, but it's gotten boring hearing the same stuff...What Ruan explained to me before he explodes.
There's multiple reasons why you might want an 11mm OVER a 9mm pump...
With injection pumps there's essentially TWO ways of increasing the injection amount, lengthen the injection duratiion (i.e. open the collar more...) or inject more fuel in a given duration... When you get to the point where you're spinning the engine at 5000rpm, a 9mm plunger simply cannot provide SHORT injection lengths, an 11mm pump will do this MUCH better, reducing exhaust gas temperatures and the engine will rev and respond MUCH better etc... The biggest disadvantage is the fact that it does play havoc with the timing system...
HOWEVER, keeping a 9mm pump also means that you are massively restricted by the amount of fuel you can run due to other parts inside the pump, you cannot just assume you can keep winding the max fuel screw further and further, because at the end of the day, the amount the throttle moves will only allow for so much fuel, even if you carry on winding the max fuel screw, since a certain part of the pump doesn't move enough... I'll leave you figure out what it is, but it's not easy to simply change this part for a "better" one, it's trial and error OR modifying said part...
People just seem to think there's NO thought gone into why we fit 11mm heads and it's just an easy option and it blows chronic coal etc... It's simply not the case, go have a look at my dyno video and there's NO smoke whatsoever at 175HP+...
RE: Quite a newbie qustion - Scott - 02-01-2013
Moved
RE: Quite a newbie qustion - sam - 08-01-2013
ideal ill have a look into it cheers guys and thanks scott
Quite a newbie qustion - RePT - 08-01-2013
Ill try and sound smart and say...
"it depends.."
RE: Quite a newbie qustion - David - 08-01-2013
What a newb
RE: Quite a newbie qustion - johnnytsa - 09-01-2013
A 9mm pump with mods will power any stock turbo and even many big turbos comfortably. Have a read and decide what will suit you best! A gov shim is quite easy. And lda mods are simple aswell.
RE: Quite a newbie qustion - sam - 09-01-2013
The pump has all the gov mods and lda pin jus wanted to no if an 11mm pump would be better with my ko3 van turbo?
RE: Quite a newbie qustion - Piggy - 09-01-2013
You would be better off...IMO....to upgrade the turbo first...make big difference just with the pump mods on the 9mm
RE: Quite a newbie qustion - sam - 09-01-2013
yeah the turbo is being put on next week same as the fmic ill see how that goes and might drive my mates with an 11mm pump if hell let me
RE: Quite a newbie qustion - Piggy - 09-01-2013
what turbo are you upgrading to?
RE: Quite a newbie qustion - sam - 09-01-2013
iveco ko3
RE: Quite a newbie qustion - karl1989 - 09-01-2013
(09-01-2013, 09:25 PM)Piggy1987 Wrote: what turbo are you upgrading to?ko3 van turbo
why not try a 10mm pump
RE: Quite a newbie qustion - sam - 09-01-2013
Hmm how do I go about that?