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Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with a Z

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Old 10-17-2005, 07:19 PM
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Default Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with a Z

I know the Y5 engine is not very strong powerwise, and you're probably asking: WHY THAT MOTOR?

Answer is: Budget.

For now, the stock Y5 SHORTBLOCK will be a temporary block until the Z6 is fully rebuilt, but the question is: Will the Y5 shortblock itself withstand any boost? JUST the shortblock. We will be using a Z6 head on the Y5 shortblock while the Z6 bottom is being built.

Now I know this can't be right, but I heard that the shortblock itself is the same between the 2 (Y8 and Y5), and that the only thing that makes the VTEC-E engine different than the SOHC VTEC engine is the head assembly itself, and I have heard of people boosting 1996-2000 Civic EX all the time (D16Y8), but how different is the shortblock itself of the D16Y5 (1998 Honda Civic HX) and D16Y8? Are they the same? And then can I boost a Y5 block the same as I could a Y8 block?

Scenerio:

Stock Z6 with a GReddy 15G kit
Engine knocks (rod) = Gives a good reason to build the Z6 block.
In the meantime, want to use a spare Y5 shortblock while the Z6 is being built (daily driver).
Want to continue to use the GReddy kit in conjuction with the Y5 block (and Z6 head).

Please keep in mind -THIS IS TEMPORARY (for zero downtime).

Until the Z6 is built.


And last but not least - can the oil pans be swapped? Tapped (turbo oil return) Z6 oil pan to a Y5 block?

Please answer....
Old 10-17-2005, 10:43 PM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

Bump - anyone?
Old 10-18-2005, 08:13 AM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

if that block is knocking and lets a rod go, your gonna lose the head.....
Old 10-18-2005, 08:16 AM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

does the z6 knock or the y5? not specific enough
Old 10-18-2005, 08:25 AM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

I'm pretty sure the y5 bottom end is the same as a y8, but not positive. You will need one z6 headstud and the rest y8 headstuds to put the motor together. You will also need an adjustable cam gear because it throws cam timing off using a y8block/z6 head combination.
Old 10-18-2005, 09:45 AM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">I'm pretty sure the y5 bottom end is the same as a y8, but not positive. You will need one z6 headstud and the rest y8 headstuds to put the motor together. You will also need an adjustable cam gear because it throws cam timing off using a y8block/z6 head combination. </TD></TR></TABLE>


i never had a problem with timing on my turbo y7 block z6 head combo


Brett
Old 10-18-2005, 11:52 AM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gotboostedvr6 &raquo;</TD></TR><TR><TD CLASS="quote">does the z6 knock or the y5? not specific enough</TD></TR></TABLE>

The Z6 knocks. Want to use a spare 20K mile Y5 shortblock while the Z6 block is being rebuilt so that there is no downtime in the meantime.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">You will need one z6 headstud and the rest y8 headstuds to put the motor together.</TD></TR></TABLE>

Why diff headstuds?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gotboostedvr6 &raquo;</TD></TR><TR><TD CLASS="quote"> if that block is knocking and lets a rod go, your gonna lose the head.....</TD></TR></TABLE>

The car is parked until we figure how to fix it. Not being driven until then.
Old 10-18-2005, 11:59 AM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I Have an STD &raquo;</TD></TR><TR><TD CLASS="quote">i never had a problem with timing on my turbo y7 block z6 head combo


Brett</TD></TR></TABLE>
Me and another user on here Boltz had the same problem with cam timing being off. He sais he found his to be off by 1.5 degrees, but i think with my zex cam it felt best at 3 degrees advanced. Are you using a y7 or z6 cam gear on your z6 head? I know my car felt like absolute **** down low at 0 degrees, but pulled even harder than my straight y8 setup with it 3* advanced. I really need to hit the dyno to find the best setting.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostdRex &raquo;</TD></TR><TR><TD CLASS="quote">The Z6 knocks. Want to use a spare 20K mile Y5 shortblock while the Z6 block is being rebuilt so that there is no downtime in the meantime.

Why diff headstuds?

The car is parked until we figure how to fix it. Not being driven until then.</TD></TR></TABLE>
y8 studs are shorter than z6 headstuds. You need one z6 headstud for the upper left hand corner where the z6 head sits higher.
Old 10-19-2005, 05:14 AM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

use the y5 i dont see why it wouldnt work
Old 10-19-2005, 03:29 PM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

Ok, who here agrees that the shortblock of the Y5 is the same as the Y8?
Old 10-19-2005, 03:32 PM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostdRex &raquo;</TD></TR><TR><TD CLASS="quote">Ok, who here agrees that the shortblock of the Y5 is the same as the Y8?</TD></TR></TABLE>

I dont know if it's exactly the same, but that thing can take some boost (so far anyways).

My friend has been runing 12psi on my old Y5 (79k miles) and it's holding up very well for him. He was making somewhere close the mid 200's last time he dynoed, and that's on an AFC, and a very very basic turbo setup.
Old 10-19-2005, 04:33 PM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

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

I dont know if it's exactly the same, but that thing can take some boost (so far anyways).

My friend has been runing 12psi on my old Y5 (79k miles) and it's holding up very well for him. He was making somewhere close the mid 200's last time he dynoed, and that's on an AFC, and a very very basic turbo setup.</TD></TR></TABLE>

That's cool... All he'll be using is my old 15G GReddy kit and not be going over more than the stock WG setting of like 7psi for now as he's using a shitty FMU (he will be going standalone very soon as I am building up his block for boost - hope to have it see somewhere in the 20psi range with a new turbo setup eventually).
Old 10-19-2005, 06:02 PM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostdRex &raquo;</TD></TR><TR><TD CLASS="quote">And last but not least - can the oil pans be swapped? Tapped (turbo oil return) Z6 oil pan to a Y5 block?</TD></TR></TABLE>

The pans are different.
Old 10-20-2005, 07:27 AM
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Default Re: Will this budget scenario work? Greddy 15G (for 92-95 Civic) Turbo on a stock Y5 shortblock with

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 5thgencivic &raquo;</TD></TR><TR><TD CLASS="quote">

The pans are different.</TD></TR></TABLE>

That's what I thought... I heard I would have to swap oil pumps to swap pans, but in doing that, we'd lose the dip stick as the Y blocks have it on the oil pump and Z has it in the block...

Rather than tap another pan, we just decided to pull the turbo out until we get the Z6 built.

Thanks for the help guys!
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