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Guess What I Found Today !!!!!!!!!
Topic Started: Feb 28 2008, 04:05 PM (246 Views)
justbutts
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Doesn't have a home to go to!
[ *  *  *  *  * ]
well my run of bad luck seams to continue.........



been checking my sparkies today and i have found oil on top of the number 2 piston

woo hoo :rolleyes: !!!!!!!!!!!!!!!!!!!!!!!!!!!!
[GK-customfield]mark[customfield-GK]Horsham Developments stage 3a (GT2871r) 363bhp @ 1.4bar nissan 200sx s14a
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NeoMagic
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Here to stay
[ *  *  *  * ]
Clean spark plug put it back in pretend you never saw it, you will feel fine in a couple of days. :)
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amnesia
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There's no replacement for displacement !
[ *  *  *  *  * ]
Worn valve seals ?

Do you have any smoke on WOT ?


[GK-customfield]Daniel[customfield-GK]If you're good at something, never do it for free...
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justbutts
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Doesn't have a home to go to!
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im hoping its worn valve seals if you can change them with the head on

my mates seam to noice a small puff of smoke on cold start up but the rest of the time to my knowledge its ok,

i dont think its smoking on wide open throttle.

i need to find out if you can change the valve seals in situ, other wise it will have to be head off :(
[GK-customfield]mark[customfield-GK]Horsham Developments stage 3a (GT2871r) 363bhp @ 1.4bar nissan 200sx s14a
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Sillysteve
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sillysteve
[ *  *  *  *  * ]
Stevey would be the best bet as he has had his head off. Usually if its just smoke on start up it can be the valve stem seals.
[GK-customfield]Steven Emson[customfield-GK]Posted Image
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justbutts
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Doesn't have a home to go to!
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just been reading some posts on the sxoc and they seam to think you can change the seals in situ

either with the compressed air method or the chord/string in the cylinder and setting the piston to tdc method.

i have had the head off mine during my full rebuild, and it was an annoying job changing the valve springs with the cylinder head removed :(

the stems seals were not replaced at that time as they had not arrived .
[GK-customfield]mark[customfield-GK]Horsham Developments stage 3a (GT2871r) 363bhp @ 1.4bar nissan 200sx s14a
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LegacyTurbo
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y0
[ *  *  *  *  * ]
pretty unlikely that the plug would be wet with oil if the stem seals were gone, i'd do a compression test before you start changing things ;)
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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RA Jay
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4 Have Gone But Never Forgotten.
[ *  *  *  *  * ]
You boys get no luck with those high power 200's.. :(
1995 WRX - 318bhp/300ftlb - SOLD - 2005
2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007
1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008
1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009
1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009

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Andy
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LegacyTurbo
Feb 28 2008, 06:00 PM
pretty unlikely that the plug would be wet with oil if the stem seals were gone, i'd do a compression test before you start changing things ;)

i change some valve seals that were leaking on a 205 and the plugs were wet with oil, the piston rings were fine so is there a reason behind that comment lewis? might be different on a 200 i dont know, but if the valve seals are leaking then oil will still get in the compression chambers the same as it would with worn piston rings surely? just asking for future reference :)
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LegacyTurbo
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y0
[ *  *  *  *  * ]
ok, but the plugs are in the middle of the four valves in the head, so if the seals are weeping the oil will drip onto the piston, but they have to be pretty fecked to do that, doesnt explain why the plug would be wet with oil, i could understand it being fouled but where its in the middle of the valves i wouldnt think it would get wet from weepage.

I'm not ruling it out but as a mechanic you always start with the easiest things first ;) do a compression test then if its all good you can rule out a hole in the piston! etc etc
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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Benny ITR
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Project HELLAFLUSH Is Here
[ *  *  *  *  * ]
Hole In The Piston :( That Would Be Baaaaaad
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LegacyTurbo
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y0
[ *  *  *  *  * ]
Lol thats a bit extreme but possible at the same time! :P
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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Andy
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fair point, thanks for clearing that one up :)
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LegacyTurbo
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y0
[ *  *  *  *  * ]
probably turn out to be the stem seals now lol :doh: :lol:
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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justbutts
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Doesn't have a home to go to!
[ *  *  *  *  * ]
i started the car yesterday evening and then pulled the plugs out to show my dad,

the plug was fine and the piston was clear

im going to have a look this morning and see what i can see,

i.e if oil has dripped down over night or if the piston is still clear, and if it is clear what happens to it just after first cold start of the day.

my mate forgot his compression tester last night but that is next on the list.
[GK-customfield]mark[customfield-GK]Horsham Developments stage 3a (GT2871r) 363bhp @ 1.4bar nissan 200sx s14a
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Stevey
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Drift Slag
[ *  *  *  *  * ]
justbutts
Feb 29 2008, 11:40 AM
i started the car yesterday evening and then pulled the plugs out to show my dad,

the plug was fine and the piston was clear

im going to have a look this morning and see what i can see,

i.e if oil has dripped down over night or if the piston is still clear, and if it is clear what happens to it just after first cold start of the day.

my mate forgot his compression tester last night but that is next on the list.

I got a compression tester at mine , If you need any help let us know :thumbsup:
200sx S14A - Stage 3A - 350bhp - Sold

Rx7 FD3S - Single Turbo - 400bhp - Sold

Rx8 231 - Run about - 231bhp - Sold

Subaru Impreza - Monster - 346BHP - Sold

200sx S13 - Budget Toy - 199.1bhp

Project Mini - 50% Done
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justbutts
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Doesn't have a home to go to!
[ *  *  *  *  * ]
ok i compression tested the number 2 cylinder today and the results are spot on as to when i rebuilt it 145 psi

i re-checked the top of the piston and the spark plug and they seam ok, may be its after a hard drive at full boost its seaping oil in,i dont know?

but took it for a run again today with stock 16psi boost pressure and all seams! to be ok. :blink:
[GK-customfield]mark[customfield-GK]Horsham Developments stage 3a (GT2871r) 363bhp @ 1.4bar nissan 200sx s14a
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Benny ITR
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Project HELLAFLUSH Is Here
[ *  *  *  *  * ]
Are You Bringing Her To The Meet On Sunday Then Chappie Or Still Jumping In With Me?
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justbutts
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may be just see how she goes over the next couple of days
[GK-customfield]mark[customfield-GK]Horsham Developments stage 3a (GT2871r) 363bhp @ 1.4bar nissan 200sx s14a
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