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Subject: "Car is slower after new motor" Previous topic | Next topic
eclipse13Jul-10-05 06:25 PM
Member since Oct 04th 2003
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#91317, "Car is slower after new motor"




          

So I spun a rod bearing and blew a whole in my block in 11/04 (pics upon request), and I finaly found a decent motor and instaled it in may. Ever since the new motor was put in, it feels like my car is bogging. It just doesnt seem as fast as it used to be. I have though about the fact that I have while my car was down I drove a friends modded rsx-s and another friends 3 series, so maybe it just feels slow by comparison. But I really just think it is slower that the old motor. Do you guys have any idea what could be causing this?

CLIFFS NOTES: My new motor is slower than the old one with the same mods, any idea on a fix?

-james

  

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Replies to this topic
RE: Car is slower after new motor, GreenRicer, Jul-10-05 06:27 PM, #1
RE: Car is slower after new motor, eclipse13, Jul-10-05 06:32 PM, #2
      RE: Car is slower after new motor, totaleklipse97, Jul-10-05 06:38 PM, #3
      RE: Car is slower after new motor, eclipse13, Jul-10-05 06:42 PM, #4
           RE: Car is slower after new motor, GreenRicer, Jul-10-05 06:50 PM, #5
                RE: Car is slower after new motor, totaleklipse97, Jul-10-05 06:55 PM, #6
      RE: Car is slower after new motor, djtrickee, Jul-10-05 06:57 PM, #7
           RE: Car is slower after new motor, 96rs-t, Jul-10-05 07:57 PM, #8
                RE: Car is slower after new motor, eclipse13, Jul-11-05 04:18 AM, #9
                     RE: Car is slower after new motor, Chamuko, Jul-11-05 10:44 AM, #10
                          RE: Car is slower after new motor, gotboost2394, Jul-11-05 02:43 PM, #11
                               RE: Car is slower after new motor, CustomGS, Jul-12-05 05:21 AM, #12
                                    RE: Car is slower after new motor, youkickedmydog, Jul-13-05 06:01 PM, #13
                                         RE: Car is slower after new motor, eclipse13, Jul-13-05 06:19 PM, #14
                                         RE: Car is slower after new motor, sike, Jul-16-05 12:56 PM, #15

GreenRicerJul-10-05 06:27 PM
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#91318, "RE: Car is slower after new motor"
In response to Reply # 0


          

Are you still breaking it in? or did you buy it already used?

  

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eclipse13Jul-10-05 06:32 PM
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#91319, "RE: Car is slower after new motor"
In response to Reply # 1




          

I bought it with about 70K on it.

-james

  

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totaleklipse97Jul-10-05 06:38 PM
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#91320, "RE: Car is slower after new motor"
In response to Reply # 2




          

Could have bad compression?? Did you do a compression test on it? Does it idle lumpy or bad in any way?

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eclipse13Jul-10-05 06:42 PM
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#91321, "RE: Car is slower after new motor"
In response to Reply # 3




          

It was actually the forth motor we found, and the first one with good compression, and it idles smoother than the old motor.

-james

  

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GreenRicerJul-10-05 06:50 PM
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#91323, "RE: Car is slower after new motor"
In response to Reply # 4


          

It could just be the life its had. If it was broken in rough, and driven pretty rough, it may burn some oil, but it will most likely have more power than one that was drivin 70K miles by a granny, or someone like me who baby's the engine and never drives hard.

  

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totaleklipse97Jul-10-05 06:55 PM
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#91325, "RE: Car is slower after new motor"
In response to Reply # 5
Jul-10-05 06:58 PM by totaleklipse97



          

If the engine was beat on and driven hard it will not have more power than one driven by a grandma.. If the engine is burning oil then it has blowby and the compression #'s will reflect that. In my opinion all n/a 420a's are slow and it's hard to tell if ones faster than another just by the "butt dyno". You very well could have a better/faster engine and just not realize it. As long as it drives good and smooth i wouldn't worry too much about it. If anything you might see variances of 2-3hp.

(don't worry mines still n/a and yes it's very slow)

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‹Jen› somehow.....

  

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djtrickeeJul-10-05 06:57 PM
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#91326, "RE: Car is slower after new motor"
In response to Reply # 2




          

Originally posted by eclipse13
I bought it with about 70K on it.


So... where does the "new motor" fit into this whole equation? The title states new motor, but yet you found some junk-yard dog that already has 70k on it? hmmm.

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96rs-tJul-10-05 07:57 PM
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#91332, "RE: Car is slower after new motor"
In response to Reply # 7




          

Originally posted by djtrickee
Originally posted by eclipse13 I bought it with about 70K on it.
So... where does the "new motor" fit into this whole equation? The title states new motor, but yet you found some junk-yard dog that already has 70k on it? hmmm.


I'm sure he meant "new" as in new to him.



SoCal DSM
1996 RS-T: Under Construction
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"USING NO WAY AS A WAY, HAVING NO LIMITATION AS A LIMITATION"--BRUCE LEE

  

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eclipse13Jul-11-05 04:18 AM
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#91337, "RE: Car is slower after new motor"
In response to Reply # 8




          

yea, They dont make new 420a's, so I meant new as in new to my car. It was a used motor.

Does that clear it up.

-james

  

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ChamukoJul-11-05 10:44 AM
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#91348, "RE: Car is slower after new motor"
In response to Reply # 9




          

normal. sometimes in mass production some parts come closer to actual specs. this is why we have tolerances. this is also why we get the "factory freaks" out there. just luck at times. Now if the difference is huge... check the compression.

Member # 751


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gotboost2394Jul-11-05 02:43 PM
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#91352, "RE: Car is slower after new motor"
In response to Reply # 10


          

Especially since you didnt drive the car for a long time and drove a few quicker cars, you most likely just thing its slower.

Take it to the track, see what it pulls off and then compare to stock or cars with similar mods.

  

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CustomGSJul-12-05 05:21 AM
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#91368, "RE: Car is slower after new motor"
In response to Reply # 11


          

I honestly think it's just the fact that you've been driving the type-s and the 3 series

Chris
---------------------------------------

98 Eclipse GS 5 spd- sold
95 Camaro Z28
64.5 Mustang 302 3spd

Originally posted by DR1665
Sometimes, you don't need to pull away to win. You just need to show them they have nowhere to run.

Originally posted by Nine5eclipse03
No, but one time i tried to pee over a car, and pooped my pants.

  

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youkickedmydogJul-13-05 06:01 PM
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#91427, "RE: Car is slower after new motor"
In response to Reply # 12




          

I think I know what will solve this problem... turbo.

Originally posted by oRACLe063
that not just any aluminum foil son !!! that reynolds wrap..lol its like the greddy of the aluminum foil world

  

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eclipse13Jul-13-05 06:19 PM
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#91428, "RE: Car is slower after new motor"
In response to Reply # 13




          

Wow thanks.

-james

  

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sikeJul-16-05 12:56 PM
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#91535, "RE: Car is slower after new motor"
In response to Reply # 13


          

Originally posted by youkickedmydog
I think I know what will solve this problem... turbo.


  

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