I have a big problem with my xud. I am running a 11mm head, gov mod, lda pin, k16 turbo from a Mercedes Atego @ 1.8 bar , 63mm exhaust, fmic , and I frequently have problems with the headgasket. I have skimmed the head , I mounted a new headgasket and after 30km blow out. I mention that the head gasket blow between headgasket and combustion chamber. I will put a picture for a better view.
I mention also that I increased combustion chamber holes. It is a bad ideea ?
10-06-2013, 08:43 PM (This post was last modified: 10-06-2013, 08:44 PM by cwspellowe.)
More to the point, what smoke levels do you have on boost? I doubt the head's lifting at 1.8 bar, how many times has the head been skimmed? Can warp a head in 30km easily if EGT's are through the roof, do you have an EGT gauge?
(10-06-2013, 08:43 PM)cwspellowe Wrote: More to the point, what smoke levels do you have on boost? I doubt the head's lifting at 1.8 bar, is the head being skimmed when the gasket is changed?
haha missed the 1.8 bar bit
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(10-06-2013, 08:43 PM)cwspellowe Wrote: More to the point, what smoke levels do you have on boost? I doubt the head's lifting at 1.8 bar, is the head being skimmed when the gasket is changed?
On boost almost no smoke. Yes, the head being skimmed every time. Also I change 2 or 3 heads...
10-06-2013, 08:47 PM (This post was last modified: 10-06-2013, 08:47 PM by cwspellowe.)
My thinking is 11mm's are smokey as hell, even with a massive blower it could be melting the head with the fuel delivered, especially if the timing's not set right too.
(10-06-2013, 08:46 PM)bik3rutz Wrote:
(10-06-2013, 08:43 PM)cwspellowe Wrote: More to the point, what smoke levels do you have on boost? I doubt the head's lifting at 1.8 bar, is the head being skimmed when the gasket is changed?
On boost almost no smoke. Yes, the head being skimmed every time. Also I change 2 or 3 heads...
11-06-2013, 05:46 PM (This post was last modified: 11-06-2013, 05:48 PM by bik3rutz.)
I used Reinz , Ajusa and Elring headgaskets. I think Ruan is right, the problem could be the head studs , because at lower rpms the engine working well. Can someone recommend me something else ? Also , has anyone a link with some arp headstuds for td ?
The setup is not poor, I do not have any problems with the turbo, the engine temperature is working correctly and I am running with an oil cooler.
(11-06-2013, 05:46 PM)bik3rutz Wrote: I used Reinz , Ajusa and Elring headgaskets. I think Ruan is right, the problem could be the head studs , because at lower rpms the engine working well. Can someone recommend me something else ? Also , has anyone a link with some arp headstuds for td ?
The setup is not poor, I do not have any problems with the turbo, the engine temperature is working correctly and I am running with an oil cooler.
Fine, but you're running a big turbo and pump with no idea on egt's. You're a brave man, personally id hate not knowing whats happening back there with those mods.
Just a suggestion, unless you monitor them you dont know whats happening, even if you ARE getting normal oil temps. End of the day you're blowing gaskets left right and centre, so something's not right. For the sake of £25 wouldnt you want to know?
15-06-2013, 06:03 PM (This post was last modified: 15-06-2013, 06:04 PM by SonnyRoby.)
Chris, why is egt so important when the engine it self is runing cool? Oil cooler and everything and temps don't go over 90 after some long period of flooring. He is very careful with the temps and starts the fans earlier. There is no smoke on boost. FMIC and 11mm on a big turbo.
Head beeing lifted? Is the presure that lifts the head or the big volume of air? What ARP studs should he buy? Were close friends and that's why i'm asking. High EGT's burn turbos and makes the engine run hot. Corect? The engine sits nice and cold so don't see why EGT's should be a problem.
Can somebody please tell me what ARP studs to buy. Saw recently some ARPs on a XUD with no spacers.
(15-06-2013, 06:03 PM)SonnyRoby Wrote: Chris, why is egt so important when the engine it self is runing cool? Oil cooler and everything and temps don't go over 90 after some long period of flooring. He is very careful with the temps and starts the fans earlier. There is no smoke on boost. FMIC and 11mm on a big turbo.
Head beeing lifted? Is the presure that lifts the head or the big volume of air? What ARP studs should he buy? Were close friends and that's why i'm asking. High EGT's burn turbos and makes the engine run hot. Corect? The engine sits nice and cold so don't see why EGT's should be a problem.
Can somebody please tell me what ARP studs to buy. Saw recently some ARPs on a XUD with no spacers.
I was only suggesting it because the bigger pump and turbo combo have the potential to generate a lot of heat, which can cause hot spotting of the head, and given the fact it's alloy it won't take a lot to warp it. Personally I'd never run anything over stock without an EGT after seeing how high they can get...
16-06-2013, 08:37 AM (This post was last modified: 16-06-2013, 08:41 AM by SonnyRoby.)
The car is now at the first national drag racing event. It looks like the head studs came loose. The head beeing lifted could be the problem of the headgaskets been burnt. The only solution will remain ARP studs. And please a link or something where we can order some studs.
I'm not surprised you are lifting the head. Haven't commented because its already been mentioned.
In regards to the head studs, there are NO stock studs available for PSA XUD fitment. However some people have found some that fit direct from another vehicle but its being kept a secret as it took months of research...
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