Pulls hard after 4000RPM

[77celi]

I have 87 7mge in my celica. The car takes off just fine but when I hit 4000 RPM the car pulls hard. Is this normal for this motor? or is there something wrong.

Thanks

Ryan

 

[supramacist]

What do you mean by pulls hard???

I guess pulls hard says it all..., let off the throttle if you can't control her.

I mean to be honest "pulls hard" is what most of us here want.

 

[chopstickz]

ever heard of vtek?

 

[IJ.]

Faulty ACIS.

 

[DegreE]

I notice my car actually feels better past 4k aswell.

lol @ vtec.

 

[Ma70.Ent]

It's probably faulty ACIS or maybe you just have a Cressida motor (non ACIS)

 

[DegreE]

What does a working ACIS do? Why is does it feel good when its broken? lol. Is it something I should be concerned about?

 

[IJ.]

It evens out the Tq curve so there's smooth power delivery across the entire power band.

 

[Ma70.Ent]

The information about ACIS is in the N/A Upgrade FAQ, but basically if it's not working right you'll feel a "kick" at 3800+ RPM, or it'll "drop off" at 3800+ RPM (depends on which way it's not working). You should never feel a change in anything. It should be smooth.

 

[supramacist]

http://cygnusx1.net/Supra/Library/TSRM/MK3/


Just handing this one out like candy tonight.
I should probably be reading it instead.

 

[amichie]

In support of the other posts mentioned above.

The ACIS valve is spring loaded in the open position. SO if it fails it is more likely to fail and remain open. Open is for high rpm operation.

 

[MaJiKaL TaNk]

I have 87 7mge in my celica. The car takes off just fine but when I hit 4000 RPM the car pulls hard. Is this normal for this motor? or is there something wrong.

Thanks

Ryan

Mine whines really loud right after 4000rpms... maybe related problem?

 

[akito]

which year of the celica did you do the swap on?

 

[gofastgeorge]

which year of the celica did you do the swap on?

Ditto that question !
Post pictures !!
Inquirey minds want to know !!!

 

[Hiko]

I'm guessing its a 77 celica, per his user ID.

If it is, do you mind if I pick you brains a bit for my own 7m swap into a 77 celica?

 

[77celi]

http://s246.photobucket.com/albums/gg120/77celi/?action=view&current=DSCN0440.jpg

Right now I'm putting coil-overs on. I'll get more pics as soon as I'm done.
Hiko: You can E-mail any questions at.
Pontbrd94@yahoo.com

 

[IJ.]

5 red x's and a link?

 

[77celi]

I tried to post the pics, guess it did not work, so I also posted the link for a back-up.

 

[Quin]

That is the most baller shit ever

 

[CyFi6]

I can feel mine kick around 4000 rpm also, how would i go about repairing this? Is it something to do with the vacuum canister?