jdmf23accord

im buildin a y8 block and wanted to use a z6 oil pump. i know i have to use a z6 oil pan but do i have to use a z6 pick up? also will the z6 oil pump bolt right up with no problems to the y8. also what about the dip stick. y8 is by oil pump and z6 is by front of car. any help will be appreciated

94EG8

If you use a Z6 pump you wont have a dipstick. Not sure about the rest. If this is about Y8 oiling issues its not because of the Y8 oil pump, it has to do with Y8 cranks only having 1 oiling hole per journal, Z6 cranks have 2. You can run a Z6 crank in a Y8 with no mods.

NotAJDMFanBoy

Supposedly the Z6 pump pushes more oil, or at least this is one of the band-aid cures for the inferior oilling of the Y8. Another fix I have seen is porting and shimming the Y8 pump.

The Z6 pickup is probably different. Unless the Y8 one would go on at the same angle and everything so that it would sit just right in the bottom of the pan, it probably wouldn't work.

If you have the Y8 motor apart, you could drill a hole and retrofit a dipstick in I'm sure. I just wouldn't unless you were going to wash the block out after...or you'd definitely spin a bearing.

I don't think I'd put a Z6 pump on just for the fact you wouldn't have a dipstick. I know there would be ways to work around this, like drilling a hole in the block to stick a tube in. Or weld a tube on a pan or just get a Z6 or A6 block

jdmf23accord

well im building a y8 block with z6 head for higher boost. block is at machine shop right now. i just dont want to spin a bearing. i have the z6 pump, pan, pick up

jdmf23accord

any1 else

NotAJDMFanBoy

The Y8 head is better. It has a slightly smaller volume, but it has quench pads that help resist detonation, plus you can run different distributors instead of being forced to use a Z6 one or cutting a perfectly good one up.

The "preferred" combination is the Z6 bottom end with Y8 top end.

NotAJDMFanBoy

The difference in compression is negligible. You can always run a thicker head gasket or different pistons or dished valves or de-shroud the valves to drop the compression if you are that concerned.

jdmf23accord

well i got the y8 block and z6 head for like 30 bucks so i took it. block is almost done now anyhow.

jdmf23accord

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Former User

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94EG8

I would think not having a dipstick would be reason enough not to go through with this. Again there's not that much difference between the Z6 and Y8 pump, its the Y8 crankshaft that was the biggest cause of spun bearings.

jdmf23accord

is there anything i can do 2 the crank? my block is almost all done and put together so ill like to stop them if theres something i can do.

jdmf23accord

z6 crank?

94EG8

Yep, direct replacement.

Kista20

there's your answer right there and I couldn't agree more, also if you are very concerned with spinning a main bearing you can add a washer to increase the spring pressure on the y8 pump, also could have the pump ported as well.