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Engine Specific Info and Questions => IDI Engine => Topic started by: dillenger1 on August 30, 2008, 06:01:59 pm

Title: 10mm head delivery valves
Post by: dillenger1 on August 30, 2008, 06:01:59 pm: Ive got a 10mm plunger from a peug. installed.I repalced the longer delivery valves with the shorter vw type.Has anyone had problems with the valve swap?Im not getting fuel to my lines and am wondering if these arent letting fuel past for some reason.I measured the depth in the head,it is equaL to a small short valve head.
Title: 10mm head delivery valves
Post by: dillenger1 on August 30, 2008, 07:10:19 pm: I was thinking the collar is blocking fuel.Its a pueg. application rated for 80hp (505 td)Or matbe my vw gov assembly is allowing this.
Title: 10mm head delivery valves
Post by: gigaz2 on August 30, 2008, 07:23:36 pm: I had that issue with the 10mm tdi head, adjusted the screw (a lot) and now it behaves just like the 9mm did.
I guess the spill orifice isn't in the same place as the 9mm plunger and your control collar might be missing the orifice altogether, so the plunger can't build pressure.

I also remember reading about some delivery valves that only opened at 60Bar (I guess those are the TDI ones, to make a sharp rise in pressure, not sure)
Title: 10mm head delivery valves
Post by: dillenger1 on August 31, 2008, 12:18:21 pm: thank you gigaz2 its running now! eureka!
Title: 10mm head delivery valves
Post by: blkboostedtruck on August 31, 2008, 02:46:04 pm: Quote from: "dillenger1"
thank you gigaz2 its running now! eureka!

you got' er going! hows those injectors i did for you? does it run good?
Duane
Title: 10mm head delivery valves
Post by: gigaz2 on August 31, 2008, 02:51:30 pm: don't thank me, you helped yourself as I only swapped the 10mm head because your signature and some other members :lol:

one day I though: shoot, if they could do it why can't I? :wink:

more about spill ports here:http://vwdiesel.net/phpBB/viewtopic.php?t=15769
Title: 10mm head delivery valves
Post by: dillenger1 on August 31, 2008, 06:16:00 pm: Im working out some timing issues.Ive got it at 1.05mm and it seems like it needs more!It sounds gurgly,like a motor boat.No marbles.I wonder if the 10mm plunger is slowing the injection.
Title: 10mm head delivery valves
Post by: gigaz2 on August 31, 2008, 06:27:07 pm: what cam are you using in the pump?

so far I only timed mine by ear so I can't help you there :(
Title: 10mm head delivery valves
Post by: dillenger1 on September 01, 2008, 05:12:39 am: Im using the vw cam,they were the same ramp(vw and peug.)same lift/duration.
Title: 10mm head delivery valves
Post by: gigaz2 on September 01, 2008, 07:33:37 am: 2 or 3mm lift?
Title: 10mm head delivery valves
Post by: Duzty on September 01, 2008, 07:37:08 am: Quote from: "gigaz2"
2 or 3mm lift?

How and where do you messaure that? PICTURES !!! :D
Title: 10mm head delivery valves
Post by: blkboostedtruck on September 01, 2008, 07:39:04 am: did you compare the back of the pump heads were the spring recess the same? you might of needed a upgrade spring kit? also sounds like you may have needed to use a 1.9 cam plate like gigaz is mentioning?
Duane
Title: 10mm head delivery valves
Post by: gigaz2 on September 01, 2008, 09:23:40 am: I've seen 10mm upgrades with the 2 and with the 3mm, I'm still experimenting with that as both seem to run.

Duzty, lift is measured on the cam disk itself, 1.6 are about 2mm and 1.9 about 3mm.
the profile is the same, only differers between IDI and TDI I believe.
Title: 10mm head delivery valves
Post by: dillenger1 on September 01, 2008, 02:14:06 pm: I dont remeber,but it was the same part as the vw.If the part is the same (lift duration)then why would i need a spring swap?."yep"just checked.same springs.Where does the smoke screw come into play with this.Its still set for a peug app.If i increase start of delivery,cant i back off the full load?there for not running away?Sorry for the double post guys ill stop the generator posting.Im having run away issues as mentioned in other post.