D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp
05-28-2003, 10:29 AM
#1
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D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp
05-28-2003, 10:34 AM
#2
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Spade)
Hmmm, I'm just learning stuff about internals for my ZC...
I used the link and put in all the ZC info, with the y8 HG and it said 10:1 compression that sound right??/ its fully stock internal......I'll be changing the head gasket this week cuz its blown....
DOHC ZC btw....
I used the link and put in all the ZC info, with the y8 HG and it said 10:1 compression that sound right??/ its fully stock internal......I'll be changing the head gasket this week cuz its blown....
DOHC ZC btw....
05-28-2003, 10:39 AM
#3
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (SlowCivicHmm)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SlowCivicHmm »</TD></TR><TR><TD CLASS="quote">Hmmm, I'm just learning stuff about internals for my ZC...
I used the link and put in all the ZC info, with the y8 HG and it said 10:1 compression that sound right??/ its fully stock internal......I'll be changing the head gasket this week cuz its blown....
DOHC ZC btw....</TD></TR></TABLE>
No, not unless you are using the 2 layer Y8 gasket and JDM ZC pistons.
Stock Y8 gasket and JDM ZC pistons comes to 9.79:1
I used the link and put in all the ZC info, with the y8 HG and it said 10:1 compression that sound right??/ its fully stock internal......I'll be changing the head gasket this week cuz its blown....
DOHC ZC btw....</TD></TR></TABLE>
No, not unless you are using the 2 layer Y8 gasket and JDM ZC pistons.
Stock Y8 gasket and JDM ZC pistons comes to 9.79:1
05-28-2003, 10:43 AM
#4
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Spade)
What pistons do I have now??? its a ZC so I figured the "JDM" zc pistons....and yes I will be using the 2 layer y8 head gasket.....
Stock compression is 9:1 right??
Stock compression is 9:1 right??
05-28-2003, 10:50 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Spade)
That calculator doesn't seem to give me the compression SRP is claiming for the pistons I bought too. Using 75.5mm bore, stock Y8 head, stock Y8 head gasket, stock Y8 piston deck height, and -4.1 piston dome displacement (which is what the SRP 10.5:1 .020 Y8 pistons are) it comes up with 10.1:1. That is .4 lower than SRP advertises. Yet when I use all stock Y8 specs it comes up with 9.6:1 which is correct.
05-28-2003, 10:53 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Spade)
bump for a good link
that would eliminate all the repeat posts asking about CR combos
edit: my CR is 10.52
that would eliminate all the repeat posts asking about CR combos
edit: my CR is 10.52
05-28-2003, 12:35 PM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (RyanCivic2000)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 »</TD></TR><TR><TD CLASS="quote">That calculator doesn't seem to give me the compression SRP is claiming for the pistons I bought too. Using 75.5mm bore, stock Y8 head, stock Y8 head gasket, stock Y8 piston deck height, and -4.1 piston dome displacement (which is what the SRP 10.5:1 .020 Y8 pistons are) it comes up with 10.1:1. That is .4 lower than SRP advertises. Yet when I use all stock Y8 specs it comes up with 9.6:1 which is correct.</TD></TR></TABLE>
Are you sure you have all of the piston specs. Wrist pins could be located lower in the piston, which in turn moves the piston higher.
Are you sure you have all of the piston specs. Wrist pins could be located lower in the piston, which in turn moves the piston higher.
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05-28-2003, 01:53 PM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Spade)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade »</TD></TR><TR><TD CLASS="quote">
Are you sure you have all of the piston specs. Wrist pins could be located lower in the piston, which in turn moves the piston higher.</TD></TR></TABLE>
How would I be able to make a correction for that in the calculator then? The only piston spec it allows you to put in is for dome displacement and the specs the SRP's came with say -4.1 piston dome displacement.
Are you sure you have all of the piston specs. Wrist pins could be located lower in the piston, which in turn moves the piston higher.</TD></TR></TABLE>
How would I be able to make a correction for that in the calculator then? The only piston spec it allows you to put in is for dome displacement and the specs the SRP's came with say -4.1 piston dome displacement.
05-29-2003, 06:43 AM
#10
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (RyanCivic2000)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 »</TD></TR><TR><TD CLASS="quote">
How would I be able to make a correction for that in the calculator then? The only piston spec it allows you to put in is for dome displacement and the specs the SRP's came with say -4.1 piston dome displacement.</TD></TR></TABLE>
If they say -4.1 CC then that's all you would need.
How would I be able to make a correction for that in the calculator then? The only piston spec it allows you to put in is for dome displacement and the specs the SRP's came with say -4.1 piston dome displacement.</TD></TR></TABLE>
If they say -4.1 CC then that's all you would need.
05-29-2003, 08:08 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Spade)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade »</TD></TR><TR><TD CLASS="quote">
If they say -4.1 CC then that's all you would need.</TD></TR></TABLE>
Yes, but why does the calculator give me 10.1:1? If I use the 2-layer head gasket it gives me 10.4:1. It is supposed to be 10.5:1 C/R and I would have assumed with the regular stock head gasket too.
If they say -4.1 CC then that's all you would need.</TD></TR></TABLE>
Yes, but why does the calculator give me 10.1:1? If I use the 2-layer head gasket it gives me 10.4:1. It is supposed to be 10.5:1 C/R and I would have assumed with the regular stock head gasket too.
05-29-2003, 08:09 AM
#12
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (RyanCivic2000)
Contact them. Ask them if they assumed you milled the head.
05-29-2003, 08:19 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Spade)
Thanks, will do. It seems it would be kind of dumb to assume I milled the head though. If that is true I guess I may end up using the two layer head gasket.
05-29-2003, 10:06 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (RyanCivic2000)
SRP uses a different number for the headgasket thickness than what the stock thickness is.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 »</TD></TR><TR><TD CLASS="quote">That calculator doesn't seem to give me the compression SRP is claiming for the pistons I bought too. Using 75.5mm bore, stock Y8 head, stock Y8 head gasket, stock Y8 piston deck height, and -4.1 piston dome displacement (which is what the SRP 10.5:1 .020 Y8 pistons are) it comes up with 10.1:1. That is .4 lower than SRP advertises. Yet when I use all stock Y8 specs it comes up with 9.6:1 which is correct.</TD></TR></TABLE>
05-29-2003, 11:16 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Spade)
I have a Y8 head gasket in my garage and it's a 3 layer unit...What's this 2 layer one you speak of?
05-29-2003, 11:48 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (94hatch)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94hatch »</TD></TR><TR><TD CLASS="quote">SRP uses a different number for the headgasket thickness than what the stock thickness is.</TD></TR></TABLE>
So what headgasket should I use?
So what headgasket should I use?
05-29-2003, 12:01 PM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (RyanCivic2000)
I think you guys are using the wrong values.
you guys are using the d16y8 piston to deck height which is .027
the d16a1 block and the d16y8 block have the same block height, same stroke, and same bore. the rod dimensions are the same too (bearing end to piston end).
therefore with a1 pistons.. use the a1 piston to deck height of .040
an unmilled y8 head, y8 headgasket, d16 block, a1 pistons yields :
12.612222016429251:1 compression
go back through your steps. im sure the piston to deck height choice was your problem
you guys are using the d16y8 piston to deck height which is .027
the d16a1 block and the d16y8 block have the same block height, same stroke, and same bore. the rod dimensions are the same too (bearing end to piston end).
therefore with a1 pistons.. use the a1 piston to deck height of .040
an unmilled y8 head, y8 headgasket, d16 block, a1 pistons yields :
12.612222016429251:1 compression
go back through your steps. im sure the piston to deck height choice was your problem
05-29-2003, 12:03 PM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (SlowCivicHmm)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SlowCivicHmm »</TD></TR><TR><TD CLASS="quote">Hmmm, I'm just learning stuff about internals for my ZC...
I used the link and put in all the ZC info, with the y8 HG and it said 10:1 compression that sound right??/ its fully stock internal......I'll be changing the head gasket this week cuz its blown....
DOHC ZC btw....</TD></TR></TABLE>
i though the dohc zc bores were spaced a little off of the sohc d series bores. which is why when you put a sohc header on a zc u gotta do a little porting.if the exhaust ports which are centered are a little off. so should the cylinders. . i dont think the y8 headgasket would be a good choice if so. but for those of you who have ths sohc zc then go for it
Modified by JaeOne3345 at 1:14 PM 5/29/2003
I used the link and put in all the ZC info, with the y8 HG and it said 10:1 compression that sound right??/ its fully stock internal......I'll be changing the head gasket this week cuz its blown....
DOHC ZC btw....</TD></TR></TABLE>
i though the dohc zc bores were spaced a little off of the sohc d series bores. which is why when you put a sohc header on a zc u gotta do a little porting.if the exhaust ports which are centered are a little off. so should the cylinders.
. i dont think the y8 headgasket would be a good choice if so. but for those of you who have ths sohc zc then go for it Modified by JaeOne3345 at 1:14 PM 5/29/2003
05-29-2003, 12:08 PM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (JaeOne3345)
WOOOOO......PM3 pistons = Cali **** water (read 91 octane)
05-29-2003, 02:12 PM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Mr. ThunderLips)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr. ThunderLips »</TD></TR><TR><TD CLASS="quote">I have a Y8 head gasket in my garage and it's a 3 layer unit...What's this 2 layer one you speak of? </TD></TR></TABLE>
???
???
05-30-2003, 05:50 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (Mr. ThunderLips)
Like the above post by thunderlips, where do you get a two layer y8 head gasket?
05-30-2003, 06:14 AM
#22
Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (willyboyD16)
u pull the 3 layer apart take out the center section and than u have a 2 layer.
05-30-2003, 06:17 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (sohc_boy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohc_boy »</TD></TR><TR><TD CLASS="quote">u pull the 3 layer apart take out the center section and than u have a 2 layer.</TD></TR></TABLE>
correct. the y8 gasket is 3 layer. some people like to remove layers. does the same thing as milling. which ir raise compression.
correct. the y8 gasket is 3 layer. some people like to remove layers. does the same thing as milling. which ir raise compression.
05-30-2003, 08:16 AM
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Re: D series calculator..If this is accurate the Y8 with A1 pistons= 13.1:1 comp (JaeOne3345)
So should I take the Y8 gasket and remove the middle layer to get closer to SRP's stated C/R of 10.5:1? (The calculator comes up with 10.4:1 with the two layer version of the headgasket.) How exactly does it remove? Does it just pull apart?