Well I installed ES motor mount inserts yesterday, and DAMN, what a difference.. Idle is a little rougher compared to before, throttle response is muuuuch better, wheelhop is 99% gone, and the shifts are much better!

GTECH tests:

before-
0-60: 7.14
1/4 mile: 15.59 @ 91.4 mph

after-
0-60: 6.74
1/4 mile: 15.42 @ 92.7 mph

Don't rub in the fact that my car is slow as hell, thanks! Also, trap speeds are a little higher on GTECH than at the strip.. I looked on their website, and this is what they said..

"G-TECH/Pro is a very accurate machine, and the trap speed result that you get from the G-TECH/Pro is actually more accurate than the racetrack. Reason is that the racetrack averages your speed over a 60 feet stretch between two beams and G-TECH/Pro measures your speed at the exact 1/4 mile point."

I don't have any engine modifications, just an intake, and that time is VERY good for a stock non vtec lude.. I'm damn impressed with the change in 0-60/launch/shifting.. it gives the car a whole new feel, more "connected"..

when revving it, the motor doesnt even move now, maybe a mm or two ha..

best modification I have done yet, and well worth the $32..

The point of this thread is basically saying you should get them to!

 

A little bit hard for me to believe the times.. but good job I guess. I thought motor mount inserts were supposed to give easier shifting and support when adding horsepower - didn't know/think they would give any additional horsepower.. as they shouldn't. Good job though. My Gtech PRO on my 3rd run (sold it soon after) gave me a 7.05 0-60 for an AT WRX which is pretty decent. With a nice launch I'd be well under. :-\ But you're basically saying your 160hp prelude was that much faster than a 227hp WRX, granted mine is AT.. I wouldn't think it would make THAT much of a difference, but maybe so... I never tried manual shifting 0-60 time. Congrats on the motor mount inserts though.

 

Yea I had a hard time believing it as well, but it improved my launch so much, and shifting, that I could really feel the difference in take off.. no wheel hop! Notice my trap speed was hardly any higher, so it was all in the launch..

I conclude that the stock mounts by themselves in preludes SUCK..

were you "loading up" when you did the 0-60 test?

 

motor mounts don't make any additional hp...but it increases the efficiency. basically...less flexibility of the engine = less rotational energy lost through the drivetrain = more hp to the wheels.

but yeah..g-tech is pretty accurate but its not a 1/4 track.

 

i coulda swore you said it was v-teched when you first got it

 

The amount of kinetic energy lost through the motion of the motor would be absolutely minimal at best, the traction gains by using the mounts however should be substantial. I have been in cars that used them before and there is in fact a noticable increase. Personally I dont think I could own a fwd car without them.

 

ole garan, thats what he told me at first to

 

maybe i should have changed what i said...but what i ment by hp..i ment by energy.

im not an engineer, so don't get all bent out of shape about this chris....and im not trying to be an asshole either. ^_^

BUT..

traction gained through the wheels is invariably energy more effectively put down to the ground. wheel hop is the lack of torsal force lost through the gooey motor mounts or poorly balanced ones. the force of static friction is gained through stiff motor mounts, thus more work (faster 1/4, 0-60) results.

right?

 

Traction gained I agree on completely, it was the overall hp gains that I didnt quite agree on. Id imagine if anything the transfer of energy through spinning tires is far less than that of the energy of tires that bite simply due to differeing friction coefficients. From my understanding what causes wheel hop is simply weight transfer. As the car accelerates the weight is transfered to the back, as traction is lost it flys back to the front, and so on with a vicious cycle. The only thing that accelerates a car into forward motion is friction between the tires and the road, and once a tire begins to spin the friction coef is shot to hell. By having stiffer mounts the weight is kept on top of the front wheels further increasing the friction causing a car to accelerate where normally that friction would be much less.

I'm not trying to argue either, doesnt really bother me in the least.

 

Just for the record, I never said anything about any extra power gain, although I may have worded how I said it in an unclear way..

Also, I have never said it was VTEC lol.. maybe you guys didn't hear the "NON" in front of that lol.. I had my cardomain page up as soon as I got the car, Prelude Si, H23a1 non-vtec.. And Matt, you have already said that before in another thread and I told you that it wasn't, you don't have a very good memory!

160 hp 15x? lb ft.