Performance cam?????? -

280ZX Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements.
Sponsored by:
Sponsored by:

LinkBack Thread Tools Search this Thread
Old 04-28-2003, 03:59 PM   #2
Super Siver & Black Stud
icice9's Avatar
Join Date: Apr 2003
Location: Hayward Ca
Posts: 1,522
motorsports have a few cams to choose from... if you get hold of thier catalog im sure theres a cam that ill suit your needs..
icice9 is offline   Reply With Quote
Old 04-29-2003, 02:49 PM   #3
The Evil Twin
Bleach's Avatar
Join Date: Mar 2001
Location: Seattle, WA
Posts: 9,287
Your low mile engine will be fine. Its not so much the cam but higher compression that stresses the engine. That's why you don't raise your compression on a higher milage engine.

As for reliability, you're probably talking about not breaking your valve springs. Stick with .450 lift That is pretty standard for most performance cams. 260 or 262 duration is usually the lowest step in cam duration that will raise your power in all rpms. (still keeping good torque and a smooth idle) 262/272 duration would also be fine. (262 intake 272 exhaust) A 272/282 or higher duration cam will get into the point where you'll notice that the rpms have to get up to 2500 before the power starts kicking in. The idle will still be fine; but the manufacturer suggests a higher compression engine with that cam.

Crane Cam makes the L-series still. Their "Stage 1" cam is what I'm suggesting you get. It might be cheaper from Motorsport but you can check out Crane Cams to see what they got.

Stock cam is 242 duration and .420 lift I believe so you can see even the 1st stage is a nice increase.

On all performance cams (even a stock cam) put in a new timing chain and set the upper sprocket to position #2. This will advance your cam 3 degrees. This makes an increase in compression slightly at idle and shows more power in all rpms for most every street engine. If you have a shaved head, set it to #3 position unless you already compensated for the head shaving. (cam tower shims; ect.)

For your low mile engine, you might get away with just a new chain, but you can also buy the whole timing kit that includes the chain, two chain guides, chain tensioner, and two sprockets. From look up the 1970 240Z and buy the whole kit for $54. It is a Japanese made kit with Nissan part numbers. Very cheap and a good item. They don't list it for the L28 but it'll work still. Same block height.
Bleach is offline   Reply With Quote
Old 04-30-2003, 04:08 PM   #6
The Evil Twin
Bleach's Avatar
Join Date: Mar 2001
Location: Seattle, WA
Posts: 9,287
Ok, so I said I believe it is 242 duration and .420 lift off the top of my head.

Looks like an L28 according to that page is 240/248 duration and basically 0.409 or lets say 0.410 lift.
I really wasn't that far off for the stock cam.

I have no dyno numbers but the cam lets the engine breath in more air. To maximize the potential of a cam you should open up your intake, increase comrpession a little, and open up the exhaust. You might want to also make sure your carbs are big enough to put out enough fuel at high rpms or for a 280ZX modify your AFM to put out 3-9% more fuel to richen things up. They all work together. With just a 1st stage cam on a stock engine I'm guessing you'll get 8-12 RWHP which is more than any other single mod will do for your engine. It should also improve midrange torque. But more like 25+ hp if you do all the other modifications together and get it done right.

I have yet to see a well built fuel injected engine run on a dyno... anyone else? (I'm not talking about Datsun race cars)

Last edited by Bleach; 04-30-2003 at 04:12 PM.
Bleach is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
z31 performance ECU z31turbo84 Wanted (WTB / WTT) 0 07-04-2005 11:51 PM
performance? juggalo280ZX 280ZX Performance / Technical 6 05-23-2005 04:42 PM
Now...This is performance ! BASEBALL248 300ZX (Z32) Performance / Technical 0 12-17-2003 09:45 AM
performance lathrop1000 240Z, 260Z, 280Z (S30) Forums 2 09-04-2003 11:38 AM
Performance Cam VernonZ 280ZX Performance / Technical 3 08-19-2003 09:27 AM


262, 280z, 280zx, 450, cam, cams, change, changing, duration, engine, gain, hp, l28, lift, performance, springs, valve

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -7. The time now is 01:37 PM.

Copyright © 2000 - 2014 ZDRIVER.COM All Rights Reserved. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.