Tony@MotorDyne .. need your input - gaskets
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From: Pennsylvania
Originally Posted by Hydrazine
The gasket you have is the new Iso Thermal Plenum gasket.
So now the Iso Thermal kit has three levels of thermal isolation built in.
1) The Aramid gasket that goes between the manifold and the lower plenum.
2) The new Iso Thermal plenum gasket that is applied directly to the plenum spacer.
3) The Copper throttle body heater which isolates your plenum from hot engine coolant flowing through it.
End result will be even lower plenum temperatures!
So now the Iso Thermal kit has three levels of thermal isolation built in.
1) The Aramid gasket that goes between the manifold and the lower plenum.
2) The new Iso Thermal plenum gasket that is applied directly to the plenum spacer.
3) The Copper throttle body heater which isolates your plenum from hot engine coolant flowing through it.
End result will be even lower plenum temperatures!
Thanks again for all your help and patience and with my numerous questions.
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Originally Posted by Hydrazine
I found that often times, the Australian, Canadian and 2002 American Z's use M8 strut bar bolts rather than the M10 bolts that are used on all other domestic Z's. If your Z was built in 2002, you have the M8 bolts. You can replace them with 6 30mm M8 bolts from the hardware store.
my 2003 Z OEM strut bar bolts are 12mm. is that what they all are?
my car was built in july of 2002 so i guess i need to run to the harware store and pickup some M8 30 mm bolts?
Last edited by **; Feb 4, 2006 at 02:23 PM.
Originally Posted by mc350z
my 2003 Z OEM strut bar bolts are 12mm. is that what they all are?
my car was built in july of 2002 so i guess i need to run to the harware store and pickup some M8 30 mm bolts?
my car was built in july of 2002 so i guess i need to run to the harware store and pickup some M8 30 mm bolts?
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Joined: Apr 2004
Posts: 75
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From: Pennsylvania
Tony,
Just so you know my strut bar was contacting my hood as well when using your spacers... I used in there place 2 of the washers you sent for the strut bar bolts under each strut bar bolt on the drivers side, and 2 washers from Home Depo under each bolt on the passenger side... The hood is sealing much better now, but I think it may still be contacting a tiny bit... also the washer I used from Home Depo on the passenger side strut bar are a little shorter than the ones you sent me (maybe a 16th to a 32nd of an Inch when combined) do you think that matters? Its also kinda wierd because I think the passenger side (side with the shorter washers) might still be contacting a little...
I wonder if Im having this clearance problem because I have a 2002 build?
Just so you know my strut bar was contacting my hood as well when using your spacers... I used in there place 2 of the washers you sent for the strut bar bolts under each strut bar bolt on the drivers side, and 2 washers from Home Depo under each bolt on the passenger side... The hood is sealing much better now, but I think it may still be contacting a tiny bit... also the washer I used from Home Depo on the passenger side strut bar are a little shorter than the ones you sent me (maybe a 16th to a 32nd of an Inch when combined) do you think that matters? Its also kinda wierd because I think the passenger side (side with the shorter washers) might still be contacting a little...
I wonder if Im having this clearance problem because I have a 2002 build?
Last edited by Rhoads; Feb 5, 2006 at 12:55 PM.
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ok mine is installed
the M10 strut bolts dont fit. so i had to use the stock ones with the spacers (for now) i didnt use the washers so ive got about half the bolt threaded through.
TONY a few quick questions. do i need to rush out and get longer bolts? or will the OEM ones still be ok? im not trying to sheer a bolt off.
what are they M8 30 mm? whats the thread?
also clearence wise i can fit the packet of instructions under the strut, thats about it! i would add the washers but my hood is so borderline
but i ran it up to redline a few times and didnt hear anything. but its too close to the plenum to see if there is any scratches or rubbing marks.
by the way i can tell an instant difference. the sound is alot deeper. but somehow the "chirp" intake sound of my nismo CAI is gone! its masked by a deeper sound. so with the nismo Exaust my car really has a more unique sound.
so thank you. you make a quality product!!!!!!!!!!!!!!
the M10 strut bolts dont fit. so i had to use the stock ones with the spacers (for now) i didnt use the washers so ive got about half the bolt threaded through.
TONY a few quick questions. do i need to rush out and get longer bolts? or will the OEM ones still be ok? im not trying to sheer a bolt off.
what are they M8 30 mm? whats the thread?
also clearence wise i can fit the packet of instructions under the strut, thats about it! i would add the washers but my hood is so borderline
but i ran it up to redline a few times and didnt hear anything. but its too close to the plenum to see if there is any scratches or rubbing marks.
by the way i can tell an instant difference. the sound is alot deeper. but somehow the "chirp" intake sound of my nismo CAI is gone! its masked by a deeper sound. so with the nismo Exaust my car really has a more unique sound.
so thank you. you make a quality product!!!!!!!!!!!!!!
Last edited by **; Feb 8, 2006 at 07:00 PM.
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Joined: Jul 2004
Posts: 33
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From: Phoenix, Arizona
So if I wanna buy the Motordyne 5/16" Plenum Spacer...do I need to buy extra gaskets. Because on the performance nissan parts website it says...
"NOTE: Extra upper plenum gaskets are recomended, (a total of two). One upper plenum gasket will need to have the center cut out, to match the spacer. Please select below for extra gaskets."
Thanks
"NOTE: Extra upper plenum gaskets are recomended, (a total of two). One upper plenum gasket will need to have the center cut out, to match the spacer. Please select below for extra gaskets."
Thanks
Originally Posted by mc350z
ok mine is installed
the M10 strut bolts dont fit. so i had to use the stock ones with the spacers (for now) i didnt use the washers so ive got about half the bolt threaded through.
TONY a few quick questions. do i need to rush out and get longer bolts? or will the OEM ones still be ok? im not trying to sheer a bolt off.
what are they M8 30 mm? whats the thread?
also clearence wise i can fit the packet of instructions under the strut, thats about it! i would add the washers but my hood is so borderline
but i ran it up to redline a few times and didnt hear anything. but its too close to the plenum to see if there is any scratches or rubbing marks.
by the way i can tell an instant difference. the sound is alot deeper. but somehow the "chirp" intake sound of my nismo CAI is gone! its masked by a deeper sound. so with the nismo Exaust my car really has a more unique sound.
so thank you. you make a quality product!!!!!!!!!!!!!!
the M10 strut bolts dont fit. so i had to use the stock ones with the spacers (for now) i didnt use the washers so ive got about half the bolt threaded through.
TONY a few quick questions. do i need to rush out and get longer bolts? or will the OEM ones still be ok? im not trying to sheer a bolt off.
what are they M8 30 mm? whats the thread?
also clearence wise i can fit the packet of instructions under the strut, thats about it! i would add the washers but my hood is so borderline
but i ran it up to redline a few times and didnt hear anything. but its too close to the plenum to see if there is any scratches or rubbing marks.
by the way i can tell an instant difference. the sound is alot deeper. but somehow the "chirp" intake sound of my nismo CAI is gone! its masked by a deeper sound. so with the nismo Exaust my car really has a more unique sound.
so thank you. you make a quality product!!!!!!!!!!!!!!
As for the stock bolts, you will be fine assuming you have 3/16" or more thread to screw it into. And for the bolt specs, you could do me a big favor by taking one of your stock bolts and taking it to a hardware store and matching it up against another bolt of known dimensions and let me know what they are.
I have tried to get this information for a long time, but its rare to find this bolt in domestic Z's. There were a few Canadian and Australian Z's that had the different bolt, but they werent able to say what the bolt specs were.
Please let me know if you find out.
Tony
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i think ive got about half of the bolt screwed in. but ill get around to the hardware store this weekend and ill let you know what the specs are
my car was built in july of 2002 #1407 so it was a real early car. they seriously beefed the bolts up! by bolts were very small compared to the ones you sent
what do you think about my strut clearence. your manual was about all i could fit. is that a little too tight?
my car was built in july of 2002 #1407 so it was a real early car. they seriously beefed the bolts up! by bolts were very small compared to the ones you sent
what do you think about my strut clearence. your manual was about all i could fit. is that a little too tight?
OK. It sounds like you have the M8 bolts. And yes, that is consistant with the 2002 year.
And your clearance is fine as long as the plenum and STB dont touch. If they did, you would notice it as a buzzing sound. If you don't have that, then you are perfectly good to go.
And your clearance is fine as long as the plenum and STB dont touch. If they did, you would notice it as a buzzing sound. If you don't have that, then you are perfectly good to go.
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ok tony here are the specs.
the bolts that come on the 2002 Z's are M8 20mm 1.25 thread. they need to be replaced with a M8 30mm
the bolts i got were from an automotive store so they were 10.9 auto grade bolts
here is a quick pic from my camera phone comparing the old and new one. i didnt have a TQ wrech when i switched them out but i hand tightened them pretty damn tight.
the bolts that come on the 2002 Z's are M8 20mm 1.25 thread. they need to be replaced with a M8 30mm
the bolts i got were from an automotive store so they were 10.9 auto grade bolts
here is a quick pic from my camera phone comparing the old and new one. i didnt have a TQ wrech when i switched them out but i hand tightened them pretty damn tight.
Last edited by **; Feb 9, 2006 at 01:31 PM.
Originally Posted by mc350z
ok tony here are the specs.
the bolts that come on the 2002 Z's are M8 20mm 1.25 thread. they need to be replaced with a M8 30mm.
the bolts that come on the 2002 Z's are M8 20mm 1.25 thread. they need to be replaced with a M8 30mm.
Tony
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From: Western Japan
Tony .. In a different thread, you stated .. regarding the new plenum gasket -vs- the one supplied by you in your kit:
"The Motordyne gasket material will be different from the Nissan gasket material."
1/ Will there be any replacement for those who just purchased your kit with the the standard Nissan gasket ?
2/ Approximately when will this new gasket be coming out ?
thanks
Bill
"The Motordyne gasket material will be different from the Nissan gasket material."
1/ Will there be any replacement for those who just purchased your kit with the the standard Nissan gasket ?
2/ Approximately when will this new gasket be coming out ?
thanks
Bill
Hi Bill,
1) Yes a replacement could be done.
2) I have limited quantities for now but they are available direct from Motordyne. The distributors will have them soon too.
1) Yes a replacement could be done.
2) I have limited quantities for now but they are available direct from Motordyne. The distributors will have them soon too.
Hey Tony, would a plenum leak cause a 1273 code (lean O2 sensor on bank 1)? I have the basic NA mods (popcharger, TP's, exhaust, and MD plenum spacer). Just installed the spacer 2 weeks ago and started blowing the 1273 on friday. I didn't use the torque wrench on the plenum, so a leak seems like the first place to start. Then maybe replace the sensor.
Thanks
Thanks
Exhaust leak upstream of the sensors would be the most likely cause.
Even a slight exhaust leak will pull in air during the scavange phase of the exhaust pulse and this will easily set off your sensor code.
I see you have TP's. I would check the TP flange interface seal very carefully.
Even a slight exhaust leak will pull in air during the scavange phase of the exhaust pulse and this will easily set off your sensor code.
I see you have TP's. I would check the TP flange interface seal very carefully.