Jump to content
View in the app

A better way to browse. Learn more.

300ZX Owners Club

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Compression test results....bad...need engine rebuild.

To say I'm gutted is an understatement. After having yet another clutch fitted as the one fitted previously was not done in its entirety, had a new prop shaft bearing, main seal, gearbox and diff oil...thanks to SouthWestZeds all runs very well. Lovely job Jason!! :bow:

 

Did a compression test on the cylinders to try and find what all the oil problems were.

 

Yes. 2 of the cylinders were very low, one was reading 60PSi (dry). It's surprising the car still runs at all, but it does and still very very smoothly.

 

Oil cap off and vapor escaping. So it's well and truly shafted.

 

Devastated really. I love my zed to bits, treat it with so much care, rarely used the power and this happens....it sucks as people that use their zed's power lots live with a faultless car for years.

 

So, it's new engine time. I just don't want another lemon as the car will be sold for spares and repair. :(

 

So if anyone has a decent engine (bare block and heads)....no need for turbos or any ancillaries, then I'd be grateful if you could let me now.

 

Thanks. :(

 

PS, big thanks to SouthWestZeds for the work they’ve already done, very good friendly service. Although they are not forum traders, I'd recommend them to everyone.

  • Replies 34
  • Views 1.1k
  • Created
  • Last Reply

Top Posters In This Topic

Featured Replies

No confusion really, Southwestzeds are as the other one doesnt exsist!!! Have you seen or heard from Paul lately mate ( no nor me )

 

 

no i havnt ones loss anothers ones gain though :)

  • Author
Hi mate, just to let you know that we (me and Jimmer) bought an engine off this guy, he is in Waterlooville, near Portsmouth, and it was a cracker. He did describe it as a complete engine less turbos and it turned out to be a complete engine less everything, no water pump, no cambelt covers, no flywheel, no plenum, no nuts and no bolts, no hoses, in fact just a absolutely bare engine. If he took anymore off, it would have been in bits. But, it was a brilliant engine. Oh, and by the way. if you buy it, make sure you have three shredded wheat and a can of spinach before you pop down to pick it up. He is a well suited and booted dude that does not get his hands dirty, and them engines are fooooooooooking heavy. Ask Jimmer.

 

Does this chap still sell them? Has he anymore? Sounds like it's still available.

There's also the valves to consider, a bad valve/seat will cause compression loss too. The bores may be OK.

  • Author
There's also the valves to consider, a bad valve/seat will cause compression loss too. The bores may be OK.

 

Wouldn't cause the oil blow back and pressure problems.

 

Top end is mint. The engine sounds like brand new still. It's quite disheartening.

 

So if anyone wants two A1 heads, then they'll be up for sale soon.

Wouldn't cause the oil blow back and pressure problems though would it?

 

Top end is mint. The engine sounds like brand new still. It's quite disheartening.

 

So if anyone wants to A1 heads, then they'll be up for sale soon.

sorry if i have missed it but was a wet test done to confirm rings. don't get me wrong im not doubting anybody just trying to clarify for myself whats up really.

did the compresson come up when a little oil was pored into the cylinder???

sorry if i have missed it but was a wet test done to confirm rings. don't get me wrong im not doubting anybody just trying to clarify for myself whats up really.

did the compresson come up when a little oil was pored into the cylinder???

Rose from 60psi to 80psi with a little oil poured in bore. Remaining cylinders showing between 120-140psi

Rose from 60psi to 80psi with a little oil poured in bore. Remaining cylinders showing between 120-140psi

 

Thanks for clearing that one up Legrath, all the compression tests were done properly and the results came to the same conclusions as the post states

 

cheers

Jason

Rose from 60psi to 80psi with a little oil poured in bore. Remaining cylinders showing between 120-140psi

ok cheers dave for the info

Thanks for clearing that one up Legrath, all the compression tests were done properly and the results came to the same conclusions as the post states

 

cheers

Jason

jason please don't get me wrong i was inquiring for my own interest thats all.

just wanted to see the difference between dry and wet test as the figures wern't stated :(

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

Recently Browsing 0

  • No registered users viewing this page.

Important Information

Terms of Use

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.