OK heres the deal I have a D16Y8 block and head. In the block I have JE 9:1 comp pistons and Crower rods now there are some issues with the Y8 block and I didnt really want to mess with it so I was going to just transfer the pistons and rods out and into a Z6 motor that I have....

Now I have done searches and I know that the Y8 will go into the Z6 but I just wanted to know if the comp ratio would still be the same?

So meaning they are 9:1 comp Y8 pistons would they be 9:1 comp pistons in the Z6 as well??

TIA!!

Side note: I have heard that there have been lubrication problems with the Y8 which was one of the reasons why I didnt want to mess with the Y8 since I want to boost it as much I can, so I figured since I was having probs with the block that I would just go with the Z6.

 

the compression in the z6 would be slightly lower because of the combustion chamber on the z6 head is slightly larger or something to that regard. So if it was 9:1 in the y8 it is probably around 8.8:1 in the z6. I dont know about a lubrication/oil issue with the y8 so i cant help you there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">the compression in the z6 would be slightly lower because of the combustion chamber on the z6 head is slightly larger or something to that regard. So if it was 9:1 in the y8 it is probably around 8.8:1 in the z6. I dont know about a lubrication/oil issue with the y8 so i cant help you there.</TD></TR></TABLE>
Hmmm interesting so I would be able to boost even more than

So I see that your a turbo Z6 with Crower rods but with CP pistons what kind of boost are you running and are you happy with the Z6?

 

pm'ed

 

Thanks for all your help

Anyone else have some insight on this or well possibly how bad the Y8 MIGHT be??

 

It's wired but I would take the z6 bearings over the y8 any day. In a few cases I've witness the Y8 bearings going at higher rpms than the z6's. I'm guessing you're going to run the z6 block and y8 head? or y8 block and z6 head?

 

No it would either be a complete Y8 or complete Z6.

I dont want to mess with one head on the other block or vice versa, well unless of course someone would recoomend a setup like that??

I have both complete motors a Y8 and Z6 and well for that matter a few A6's and a Z1(mad vtec-e!!)

I have the Y8 with the pistons, rods, and block guard all other heads/blocks are stock so if someone would recommend a better block then the Y8 I would transfer the pistons and rods out of the Y8 and into the other block...

 

up for some more answers/suggestions...

 

Well I will bump it up again and see if ayone else has some opinions....

 

i have a z6 block and y8 head. if you want lower compression use the z6 head. y8 head has smaller combustion chambers.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh &raquo;</TD></TR><TR><TD CLASS="quote">i have a z6 block and y8 head. if you want lower compression use the z6 head. y8 head has smaller combustion chambers.</TD></TR></TABLE>
So your saying Z6 block and Z6 head or Y8 block with the Z6 head?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vinceg99 &raquo;</TD></TR><TR><TD CLASS="quote">So your saying Z6 block and Z6 head or Y8 block with the Z6 head? </TD></TR></TABLE>

well you said you have to use a z6 block becaused your y8 is effed up. so z6/z6

wait are u obd2??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh &raquo;</TD></TR><TR><TD CLASS="quote">

well you said you have to use a z6 block becaused your y8 is effed up. so z6/z6

wait are u obd2??</TD></TR></TABLE>
No actually I am non-obd or well obd0 I am going to go obd-1 though.

As for the Y8 block the issues with it is one messed up head bolt (threads a bit messed up going to try to run a tap through it) and it has a stripped out lower motor mount bolt (the one under the t-belt cover) it could be helicoiled I know but I was wondering if it was even worth it if there is oil probs with the Y8 or if the Z6 was just a better block I could swap the parts over you know?

 

ahhh thats a easy fix..... i have a $370 time sert kit made for d series head stud holes..

ill sell it to you..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh &raquo;</TD></TR><TR><TD CLASS="quote">ahhh thats a easy fix..... i have a $370 time sert kit made for d series head stud holes..

ill sell it to you.. </TD></TR></TABLE>
Well what about the motor mount bolt hole?? the kit will fix the head bolt problem but not the motor mount problem.

If there was no issues with the Y8 I would have just used it and been fine with it but since there are issues I figured I would find out which would be better to use the Y8 or the Z6 or well for that matter which part from each?? I could even throw and A6 in the mix and ask everyone which block to use which head but I do want the sohc vtec....

 

for the motor mount hole you can use time sert kit. or these gripping things like i did.

 

Vince... from what I've heard, the Y8 oil pump is inferior to the Z6, it's a different part # and as you can see it has the dipstick coming out of it. I'm not sure exactly why it's not as good, but I've seen LOTS of Y8's with oil starvation issues and spun bearings.

Thats why I check the womans oil very frequently!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dr. ****** &raquo;</TD></TR><TR><TD CLASS="quote">Vince... from what I've heard, the Y8 oil pump is inferior to the Z6, it's a different part # and as you can see it has the dipstick coming out of it. I'm not sure exactly why it's not as good, but I've seen LOTS of Y8's with oil starvation issues and spun bearings.

Thats why I check the womans oil very frequently!</TD></TR></TABLE>
Yeah but I have heard if you use arp hardware in the Y8 that will cure the problem?? I dont know if there is any truth to this or not but it kind of didnt make sesne why would bolts help out the oil pump??

So Kevin then your opinion would be the Z6 then I assume right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh &raquo;</TD></TR><TR><TD CLASS="quote">for the motor mount hole you can use time sert kit. or these gripping things like i did.</TD></TR></TABLE>
Griiping things? Helicoils? And what exactly is a sert kit?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vinceg99 &raquo;</TD></TR><TR><TD CLASS="quote">
Yeah but I have heard if you use arp hardware in the Y8 that will cure the problem?? I dont know if there is any truth to this or not but it kind of didnt make sesne why would bolts help out the oil pump??

So Kevin then your opinion would be the Z6 then I assume right?</TD></TR></TABLE>
Yeah that doesn't make much sense either, yeah I'd just use the Z6 bottom end, with the Z6 head. I'd a Y8 IM if you have one as well.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dr. ****** &raquo;</TD></TR><TR><TD CLASS="quote">
Yeah that doesn't make much sense either, yeah I'd just use the Z6 bottom end, with the Z6 head. I'd a Y8 IM if you have one as well.</TD></TR></TABLE>
Yeah I have a Z6 and Y8 manifolds the Z6 is on the A6 motor in the CRX and the Y8 is sitting on the shelf...lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vinceg99 &raquo;</TD></TR><TR><TD CLASS="quote">
Yeah I have a Z6 and Y8 manifolds the Z6 is on the A6 motor in the CRX and the Y8 is sitting on the shelf...lol</TD></TR></TABLE>
Yeah you should port match the Y8 mani and get a Hondata or similar IM gasket as well... and if you can get one... a OBD0 LS TB wouldn't hurt as well.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vinceg99 &raquo;</TD></TR><TR><TD CLASS="quote">Griiping things? Helicoils? And what exactly is a sert kit? </TD></TR></TABLE>

http://www.timesert.com &gt; helicoil

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh &raquo;</TD></TR><TR><TD CLASS="quote">

http://www.timesert.com &gt; helicoil</TD></TR></TABLE>
Yeah I was actually talking to someone yesterday about these even though neither one of us knew what they were called...lol....

So if I wanted to use those I would have to drill and tap the block cause where the lower motor mount bolt WAS its like completely smooth no threads what so ever in the whole anymore (dont ask me what the hell happened he was also using a lug nut as a washer on the motor mount bolt above this stripped one )

This would be easier then having to pull out the pistons and rods and put them into another block BUT I want to find out more info on the whole y8 oil probs...

Also can anyone touch on the whole using arp hardware helps with the oil probs in the y8??

Thanks for your help oh and btw how much would you want for your kit?

 

timeserts are not cheap like helicoils. remember you get what you pay for. i bought my d series kit for $370. ill sell it for alot cheaper than that.