Welcome to the SR20 Community Forum - The Dash.
Register
SR20 forum logo

Thread: Factory mis-fit?

+ Reply To Thread
Posts: 11-20 of 28
2009-09-05 01:59:32
#11
Originally Posted by hammerin
Keep in mind, as a motor ages, the compression tends to go up slightly due to carbon build up.


What about the wearing of the piston rings? That would bring it slightly back down.
2009-09-06 18:54:16
#12
Originally Posted by blackb15
So I saw something the other day that said the SE-R ran a 15.9 bone stock from the factory. (correct?) I managed to pull a 15.9 in my car with nothing but a pop charger and a timing advance at an elevation of almost 5000 feet. Around town, this car just plain goes. In comparison to my B15, which is all of 200lbs heavier, the B15 just doesn't compare in the speed department.

So, possible that the JDM highport in my car is making a little more power than it's rated for? Any reason why I'm not an exhaust, set of cams, and a pair of slicks away from a 14 second quarter?

WHY GO THREW SO MUCH MONEY .. VVL WOULD BRING YOU TO THE PLACE YOU WANT AND IS NEWER THEN MOST JDM SR'S//
2009-09-06 19:25:22
#13
Aparently you didn't read the whole post, Danny.

He HAS a JDM Highport. He's asking if it's feasible to run exhaust, a set of cams, and a set of slicks and get himself into the 14's.
2009-09-07 14:38:15
#14
practice, practi....ok
sure, it's possible! back in the day, jay hassinger took his bone stock (cone style air filter added) b14 to a 15sec. flat!
so much for the slow b14's, huh!?
2009-09-07 19:45:20
#15
If you have a few parts related to each other that are all not in great shape and usually the more expensive ones without FSM saying when to replace in some cases, you will see that on the dyno for sure.

But if your JDM header is doing better then stated, sure, why not. So it must be something is really good on the intake and exhaust and working together.

I was told that Nissan can use a margin for rated HP and you usually can go higher/better bone stock. That's why I'm getting my car up to spec (besides a muffler) and dyno it, or dyno it with another intake. Then I start looking for a nice exhaust upgrade.

I'm messing with it this way for years now, had 1 dyno in my life and the rest is measured by my senses. Btw, I never had a good header under my car
2009-09-08 00:20:15
#16
Originally Posted by HKS
WHY GO THREW SO MUCH MONEY .. VVL WOULD BRING YOU TO THE PLACE YOU WANT AND IS NEWER THEN MOST JDM SR'S//


Previous owner put the JDM motor in, not me.

I have a header on the way, then in two weeks I will order the rest of the exhaust and get it all put on. Cams won't happen until over winter, need to save the $$$$ first.
2009-09-08 01:41:11
#17
overkill has really nice exhaust systems for a pretty good price, thats where i got mine.. altho im kinda wishing i got a 3" tho my buddy runs 15.7 at 86.5 or something like that in his se-r, bone stock jdm swap all he has is a hot shot cai, i've raced him with my ve.. he's a quick bastard.. i think with headers an exhaust an some sticky tires he could pull some nice numbers
2009-09-24 04:02:20
#18
Any way to tell if this motor already has a set of cams in it? Could explain why the car doesn't idle flat and has some great top end. Would also explain the abnormal e.t at the drags...
2009-09-24 04:12:29
#19
Originally Posted by blackb15
Any way to tell if this motor already has a set of cams in it? Could explain why the car doesn't idle flat and has some great top end. Would also explain the abnormal e.t at the drags...


pop the VC and look for anything on the cams they may indicate they are aftermarket.

Also, the JDM highport has higher compression. Which, if my memory serves correctly, gives it about 5 or so more HP than a USDM highport.
2009-09-24 04:45:01
#20
Originally Posted by hammerin
Keep in mind, as a motor ages, the compression tends to go up slightly due to carbon build up.


but at the same time i would think carbon build up (enough to raise compression) would cause ping no?
+ Reply To Thread
  • [Type to search users.]
  • Quick Reply
    Thread Information
    There are currently ? users browsing this thread. (? members & ? guests)
    StubUserName

    Back to top