intake manifold gasket...
12-17-2003, 07:24 PM
#41
nope.. it sits on my desk to answer questions for people that can't look stuff up for themselves. 
otherwise, the only thing I use the FSM for is plug gaps, torque specs, and proving people wrong on .orgy.
otherwise, the only thing I use the FSM for is plug gaps, torque specs, and proving people wrong on .orgy.
12-18-2003, 12:14 PM
#43
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Join Date: Jan 2001
Posts: 2,105
another update:
gasket is cut, waiting for friend to get home so i dont have to use a dull hacksaw to get the excess material off (sabre saw is alot faster). should be installed later this evening or tomorrow...for now i'm off to get longer bolts.
gasket is cut, waiting for friend to get home so i dont have to use a dull hacksaw to get the excess material off (sabre saw is alot faster). should be installed later this evening or tomorrow...for now i'm off to get longer bolts.
12-19-2003, 02:50 AM
#44
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Join Date: Jan 2001
Posts: 2,105
ok, spacer is in, everything seems mostly normal, maybe slightly more low end power but that could be due to the engine being cold, it being 26* out (combined with a cold engine) or maybe the spacer is doing something for low end power..
i do however have a major, intermitten vacuum leak but that could be from a hose i knocked off (most likely, same symptoms as when the same hose was cracked before).
the good: i used the stock bolts, coils did not need to be modified (i came to this conclusion because i tightened the bolts, put everything back together and it ran normal at idle and while i was driving except for the vac leak symptoms)
the bad: my EGR tube WILL NOT thread back onto the valve, its slightly off alignment, so tomorrow i'm going to do my best (read: with more patience this time) to connect it back up..if that doesnt work, i'm cutting it off, crimping it and calling it done.
also, my wierd running condition could be caused by the EGR opening, the ECU thinking its getting exhaust gas when its really getting fresh air..who knows, not me.
the wierd running condition is however is characteristic of my previous vac problem, it would hesitate badly sometimes, occassionally it would not respond to throttle what-so-ever. this time, i had it almost to the floor and it was barely maintaining 2000rpm in second gear (exhaust note sounded like i was off the throttle also), i let off the gas, it dropped to idle and all was well..it definately feels like a vac problem, i'm just hoping its not from the spacer..if it is, gasket-maker, here i come!
more info as it comes.
also, today i was testing the material before i cut. put my stove on so it was way too hot to touch, laid the material on it and let it sit for about 10 minutes, come back, the stove is very hot (alot more so than i anticipated), lay my hand on the top of the material and its considerably warmer than the air(maybe 60*), but not hot by any means, i touched the side that was directly on the stove and it burned my hand..we'll see, i'll run it hard tomorrow and see what it does (assuming i get it running right, again).
any constructive input is always welcome, dont be afraid to IM me either.
i do however have a major, intermitten vacuum leak but that could be from a hose i knocked off (most likely, same symptoms as when the same hose was cracked before).
the good: i used the stock bolts, coils did not need to be modified (i came to this conclusion because i tightened the bolts, put everything back together and it ran normal at idle and while i was driving except for the vac leak symptoms)
the bad: my EGR tube WILL NOT thread back onto the valve, its slightly off alignment, so tomorrow i'm going to do my best (read: with more patience this time) to connect it back up..if that doesnt work, i'm cutting it off, crimping it and calling it done.
also, my wierd running condition could be caused by the EGR opening, the ECU thinking its getting exhaust gas when its really getting fresh air..who knows, not me.
the wierd running condition is however is characteristic of my previous vac problem, it would hesitate badly sometimes, occassionally it would not respond to throttle what-so-ever. this time, i had it almost to the floor and it was barely maintaining 2000rpm in second gear (exhaust note sounded like i was off the throttle also), i let off the gas, it dropped to idle and all was well..it definately feels like a vac problem, i'm just hoping its not from the spacer..if it is, gasket-maker, here i come!
more info as it comes.
also, today i was testing the material before i cut. put my stove on so it was way too hot to touch, laid the material on it and let it sit for about 10 minutes, come back, the stove is very hot (alot more so than i anticipated), lay my hand on the top of the material and its considerably warmer than the air(maybe 60*), but not hot by any means, i touched the side that was directly on the stove and it burned my hand..we'll see, i'll run it hard tomorrow and see what it does (assuming i get it running right, again).
any constructive input is always welcome, dont be afraid to IM me either.
12-21-2003, 06:47 PM
#47
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Join Date: Jan 2001
Posts: 2,105
alright, more testing today, its about 15* warmer(20* vs 35ish) than it was last time i drove the car (fixed the EGR leak temporerily, which also cured my vac leak symptoms, but exhaust is still leaking from rear manifold/ypipe flange)and its definately noticeably faster. sadly i do NOT have any idea how much heat this thing is blocking because i havent driven it long enough for the manifold to heat soak.
i hate to keep giving you guys thrown together impressions/updates, but i feel like i should post what happens so i dont forget the sequence of which my problems occured and so you guys dont think i'm forgetting about it.
i hate to keep giving you guys thrown together impressions/updates, but i feel like i should post what happens so i dont forget the sequence of which my problems occured and so you guys dont think i'm forgetting about it.
12-25-2003, 11:15 PM
#49
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Join Date: Jan 2001
Posts: 2,105
yet another review of the spacer.
driving very hard today, tachin' out gears like theres no tomorrow, car ran like a dream. get off the highway and try to bog it (it used to stumble real bad after long highway runs), it just goes.
get to my aunt's house (after a little over an hour of driving hard), pop the hood, couldnt touch the valve cover, but the upper plenum was just barely warm.
it used to be on that drive, my valve cover and upper plenum would be around the same temp.
this thing actually works! anyone who is interested, IM me or i'll post a thread if i dont hear from anyone (its easier for me to keep track of people on AIM than it is for the forum since the forum doesnt allow me to stay logged in for some stupid reason, and sometimes it goes down)..do what you gotta do.
in the near future i plan to make lower plenum spacers. when i have a little extra time, i'll make a TB spacer, but that shouldnt be needed (at least to block heat) if you bypass the TB coolant.
driving very hard today, tachin' out gears like theres no tomorrow, car ran like a dream. get off the highway and try to bog it (it used to stumble real bad after long highway runs), it just goes.
get to my aunt's house (after a little over an hour of driving hard), pop the hood, couldnt touch the valve cover, but the upper plenum was just barely warm.
it used to be on that drive, my valve cover and upper plenum would be around the same temp.
this thing actually works! anyone who is interested, IM me or i'll post a thread if i dont hear from anyone (its easier for me to keep track of people on AIM than it is for the forum since the forum doesnt allow me to stay logged in for some stupid reason, and sometimes it goes down)..do what you gotta do.
in the near future i plan to make lower plenum spacers. when i have a little extra time, i'll make a TB spacer, but that shouldnt be needed (at least to block heat) if you bypass the TB coolant.
12-27-2003, 08:09 AM
#53
Junior Member
Join Date: Mar 2002
Location: Wichita, KS
Posts: 29
I happen to be replacing my intake manifold gaskets, and the upper plenum gasket right now... as soon as the lower gaskets get into the shop....
The intake manifold (being the lower thing directs the air from the plenum to the heads, and has the ports for the injectors) has water ducts running through it... so I don't think using any spacer here would help.... but using one in between the manifold and the plenum, could definately help... Just look at the fuel rails, they have plastic spacers between them and the intake manifold (can't remember if they actually bolt to the manifold or not, too lazy to go out and check).
I am sad to say I can't wait a week or more to get a spacer, so I'll have to just use the plain ol' gasket between the plenum and the manifold...
The reason I am doing all this is I needed to change my rear valve cover gasket, so i figured I'd take the fuel rails and the manifold off and change the knock sensor and harness while I'm down there...
I have oil, a good bit, in the manifold and plenum... I have started another thread on this... if you have input, please reply to that thread.... Thanks!
The intake manifold (being the lower thing directs the air from the plenum to the heads, and has the ports for the injectors) has water ducts running through it... so I don't think using any spacer here would help.... but using one in between the manifold and the plenum, could definately help... Just look at the fuel rails, they have plastic spacers between them and the intake manifold (can't remember if they actually bolt to the manifold or not, too lazy to go out and check).
I am sad to say I can't wait a week or more to get a spacer, so I'll have to just use the plain ol' gasket between the plenum and the manifold...
The reason I am doing all this is I needed to change my rear valve cover gasket, so i figured I'd take the fuel rails and the manifold off and change the knock sensor and harness while I'm down there...
I have oil, a good bit, in the manifold and plenum... I have started another thread on this... if you have input, please reply to that thread.... Thanks!
12-27-2003, 09:09 AM
#55
Senior Member
Thread Starter
Join Date: Jan 2001
Posts: 2,105
Originally Posted by MP3Car
I happen to be replacing my intake manifold gaskets, and the upper plenum gasket right now... as soon as the lower gaskets get into the shop....
The intake manifold (being the lower thing directs the air from the plenum to the heads, and has the ports for the injectors) has water ducts running through it... so I don't think using any spacer here would help.... but using one in between the manifold and the plenum, could definately help... Just look at the fuel rails, they have plastic spacers between them and the intake manifold (can't remember if they actually bolt to the manifold or not, too lazy to go out and check).
I am sad to say I can't wait a week or more to get a spacer, so I'll have to just use the plain ol' gasket between the plenum and the manifold...
The reason I am doing all this is I needed to change my rear valve cover gasket, so i figured I'd take the fuel rails and the manifold off and change the knock sensor and harness while I'm down there...
I have oil, a good bit, in the manifold and plenum... I have started another thread on this... if you have input, please reply to that thread.... Thanks!
The intake manifold (being the lower thing directs the air from the plenum to the heads, and has the ports for the injectors) has water ducts running through it... so I don't think using any spacer here would help.... but using one in between the manifold and the plenum, could definately help... Just look at the fuel rails, they have plastic spacers between them and the intake manifold (can't remember if they actually bolt to the manifold or not, too lazy to go out and check).
I am sad to say I can't wait a week or more to get a spacer, so I'll have to just use the plain ol' gasket between the plenum and the manifold...
The reason I am doing all this is I needed to change my rear valve cover gasket, so i figured I'd take the fuel rails and the manifold off and change the knock sensor and harness while I'm down there...
I have oil, a good bit, in the manifold and plenum... I have started another thread on this... if you have input, please reply to that thread.... Thanks!
as for the lower intake spacers, i think i'd see a very small gain from it but enough to justify cost. on my next monster VE, i'd like to port the water jackets and get them ceramic coated but thats a whole different ballgame which i know very little about..mybe i'll do it to this one, who knows, it depends on what i end up doing with the injectors (currently stock, may upgrade to 370cc 95/96 Z32). we'll see.
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