yeha its still over 20mpg, 2 weeks in a row it was 19.xxmpg. now its back up to 23. Id say the average is around 21 city, 26 Hwyjmhalder wrote:how much was your gas mileage effected, is it still aproximatly over 20mpg
I think the LCA is just different between the two sets of cams. If compression checks out then you're fine.Shift__BODOM wrote:hmm, i just swapped my old '93 cams into my new '96 motor, and i've run across a few problems. that image is my '96 cams before i attacked them. i dont have an after pic, but i can tell you that the '93 cams don't look exactly like that...
the cams at TDC on cyl #1 with the old '93 cams installed don't point exactly outwards like the other ones did, but point slightly more at an upward angle from the center. this is the only way to angle them so that the valves are all closed. i think that with this setup the intake cam is slightly advanced, and the exhaust cam is slightly retarted by a tooth on the cam gears or a few degrees. with the #1 cyl. lobes pointing out like they should be at TDC, the #3 cyl intake valves and #2 cyl exhaust valves are depressed slightly. i wish i had a picture of the cams the way they are now. btw both cam sprockets are stock, non adjustable ones. i just need to confirm that the cams are off timing...and what about those valves being pushed down slightly? is that a problem or should i focus on putting #1 cyl cams at TDC?
Interesting. If I recall, the cams have a little I and E engraved on them, don't they?s13sr20chris wrote:IMPORTANT
DONT GO BY THE COLOR OF THE PAINT ON THE CAMS
i have just confirmed that some s13 ka24de's have orange on the intake and green on the exhaust while some others have it exactly opposite. i know this because i just rebuilt 2 heads side by side. they were both from 91 s13's and they were exact opposites. i even installed them both ways and was stumped as to why the lobes were not pointed the right way. then i just swapped them around and found this out.
no, you must swap them.oneline180 wrote:so what if you put the motor together and found out you have the cams backwards? can you just get the lobes to point outwards (facing away from each other) or should you flip them the way they are supposed to be?
Well, you CAN keep the cams as 248/240 so long as you can get them aligned right. But it will change the performance of the car. And whatever you do, DO NOT try to start the engine before you have thoroughly rotated it by hand.oneline180 wrote:so what if you put the motor together and found out you have the cams backwards? can you just get the lobes to point outwards (facing away from each other) or should you flip them the way they are supposed to be?
I think that you would have to break in a new cam aswell on a dual (or single for that matter) overhead cam. As an in block cam you would want to be shure everything was in working order before road testing.H.D.HUMPERDINK wrote:I have a question: I know that on push rod motors you have to break the cam in, and I was wondering if you have break in cams on our cars?
ouch.seanman wrote:that would probably mess your **** up considering the intake cam is usually earlly to allow intake flow to push out the excess exhaust. is it not possible to look in a chilton for all the cam timing info and what not? and another question, do you have to worry about your pistons slamming into your valves if your timing becomes off?