KA24 248/248 cam swap question

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Klot
Posts: 20
Joined: Mon Jun 24, 2013 1:22 pm
Car: '92 240SX Coupe
KA-T in the works...
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So the guy I bought my 240 from said he swapped in the 248 cam for the 248/248 swap for the KA24. That's fine, but my question is this...

Everywhere I've read said pull the cam back three teeth, but he said he advanced it three teeth? Does rotating the cam ccw three teeth advance it or retard it?

The car has absolutely no balls down low so I'm thinking he timed it the wrong way. The car hesitates like crazy. Any ideas?


vas13hatch
Posts: 87
Joined: Sun Dec 30, 2012 12:20 pm
Car: 91 s13 Hatch
Location: butttthole VA

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3 teeth ccw is 3 teeth advanced. I dont think it would run the other way. I have this swap and it does feel like the low end lost a little but seems to pull harder and harder from 3k to around 5500-6000, I dont like to rev it out much more than that. If it's stumbling off idle get a timing light and adjust your actual timing, or just experiment and turn the distributor a little till it runs better. If that's not it then it's probably fuel/vaccum related.
Consider getting your ecu tuned. These cars were tuned from the factory for emissions not power, a tune can make a great difference in power.

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Klot
Posts: 20
Joined: Mon Jun 24, 2013 1:22 pm
Car: '92 240SX Coupe
KA-T in the works...
Contact:

Post

vas13hatch wrote:3 teeth ccw is 3 teeth advanced. I dont think it would run the other way. I have this swap and it does feel like the low end lost a little but seems to pull harder and harder from 3k to around 5500-6000, I dont like to rev it out much more than that. If it's stumbling off idle get a timing light and adjust your actual timing, or just experiment and turn the distributor a little till it runs better. If that's not it then it's probably fuel/vaccum related.
Consider getting your ecu tuned. These cars were tuned from the factory for emissions not power, a tune can make a great difference in power.
Currently running an NA tune from ICEMAN (Steve). I adjusted the TPS while the car was running and it really likes the .49V I'm running now. Spec is .45v-.55v so I'm happy with that. I don't have a timing light so that won't be an option at this point, but I'll be throwing the stock intake manifold back on hoping it will help with the low end a bit. The one on there now (was installed before I bought the car) has a huge plenum and shorter, fatter runners. Combining the 248 cam with the high-rpm designed intake manifold absolutely killed the car's balls below 2k rpm.


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