My 240's compression is bad...

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
xns
Posts: 405
Joined: Fri Mar 21, 2003 4:59 pm
Car: Computers and cars
Contact:

Post

Yeah, so we tested the compression today, cylinder 1 is 150 and 2,3,4, are all 90p.s. compression should be between 150-70

so I guess this means my car will be outta commission for the rest of the summer :( im very sad...


Altiman94
Posts: 5891
Joined: Sun Jun 22, 2003 12:13 pm
Car: 1989 Nissan 240SX

Post

sounds like its in need of a rebuild.

SeVa-S13
Posts: 8478
Joined: Thu Jan 23, 2003 9:11 pm
Car: '05 GTO 6spd

Post

Just a reason for rebuild + turbo. YAY!

[Zero-S]
Posts: 5295
Joined: Wed Apr 16, 2003 10:56 am
Car: Tell me whats wrong with this picture. 3 240's, only one runs.

Post

rebuild kit will be like 450. C'mon xns, you know you want to.

SeVa-S13
Posts: 8478
Joined: Thu Jan 23, 2003 9:11 pm
Car: '05 GTO 6spd

Post

Heh, it's not him you have to convince, it's daddy. :) (Flyfishz)

User avatar
hybrid_flyer
Posts: 790
Joined: Thu Jun 17, 2004 12:51 pm
Car: 95 240sx SE wrecked....89 240 coupe now

Post

XNS

if you are going to do a rebuild there are a few things you may want to look into

1. A factory service manual, chilton aint gonna cut it.

2. Quality tools......ie a good quality torque wrench. Trust me you want to make sure nuts and bolts are tightened to spec.

3. Quality parts...know what you are buying, in some cases OEM is better than aftermarket.

4. Help.....if for no other reason it makes the job a lot easier with extra sets of hands. Also the help can check every single thing you do to make sure you arent overlooking anything.

5. Patience...there will no doubt be problems with the rebuild...just remember to relax and have fun doing it...The harder the challenge the better the reward.

if you need anything else....dont hesitate to ask...me personally i would not mind helpin ya out.. cars are fun esp. when they go fast

[Zero-S]
Posts: 5295
Joined: Wed Apr 16, 2003 10:56 am
Car: Tell me whats wrong with this picture. 3 240's, only one runs.

Post

Flyfishz already said that he's done with the project. Everything else is up to xns:)

Hybrid_flyer has very good points, cars are always easier to work on with good tools and help. Being able to find all your tools helps out greatly...Boy Wonder and I would know.

User avatar
hybrid_flyer
Posts: 790
Joined: Thu Jun 17, 2004 12:51 pm
Car: 95 240sx SE wrecked....89 240 coupe now

Post

now i thought about it a little more.....it might not be that bad... yous aid earlier that your were puffing white smoke. White smoke =coolant leak... Coolant + Low compression= possible bad head gasket. Check yer oil and see if it looks like a iced mocha if it does then your head gasket is done for sure.. if not then you are leaking coolant somewhere else.

xns
Posts: 405
Joined: Fri Mar 21, 2003 4:59 pm
Car: Computers and cars
Contact:

Post

hmmm, maybe... will check all of this stuff as soon as monday rolls around.

Altiman94
Posts: 5891
Joined: Sun Jun 22, 2003 12:13 pm
Car: 1989 Nissan 240SX

Post

white smoke=bad head gasket. Do a leakdown test to make sure where your leaking compression

User avatar
BadMojo
Posts: 3946
Joined: Sat Feb 22, 2003 2:17 pm
Car: 2007 Mazdaspeed 3

Post

Was the test done correctly? Exactly how did you do it?

Did you try pouring a cap full of oil through the spark plug well? If so, did the #'s improve?

Considering that you've got the white smoke and poor compression across three adjacent cylinders, head gasket sounds like a reasonable assumption.

Anyway, getting a leakdown test done will definitely help you pinpoint the source of the problem instead of just tearing in to the engine.

flyfishz
Posts: 524
Joined: Fri Mar 21, 2003 4:06 pm
Car: fishing, golf, hangin with the kids

Post

Valves sucked into the head on three cyls...We could get by with rebuilding the top end...but at this point may as well just do the whole damn thing and be done... what would be the point in stopping now---2 weeks max back on the road...

User avatar
D1SR240
Posts: 3232
Joined: Mon Aug 18, 2003 11:55 am
Car: 2002 BMW M5
1991 Nissan 240SX

Post

could rebuild, or just put in another KA, that would be easier, if you can find one for a decent price. I got mine 96 for $250 with 46,000 miles on it.

Altiman94
Posts: 5891
Joined: Sun Jun 22, 2003 12:13 pm
Car: 1989 Nissan 240SX

Post

They may want to rebuild to insure the vehicle will be running for years down the road. Its probably XNS's only car for atleast thru high school.


Return to “240sx General Discussion”