rx7???rx7#1

car has a rebuild @ 72000 now there is 86000 stilll has the orginal exhaust system. did this hurt the rebuild. Also are the rear diffs known to leak.

thanks for your help

SpeedKing

iTrader: (4)

Nope and nope.

rx7???rx7#1

i should replace the restrictive cat right dont they clog up

SpeedKing

iTrader: (4)

^Eventually...but no need if there is nothing wrong with it. It's the pre-cat that needs to be replaced with a downpipe that's a must. You gonna buy this car or what?

rx7???rx7#1

hell yeah weekend i will be driving this bad boy home

where can a precat replacement and should i get a high flow cat

rx7???rx7#1

the car had a rebuild but didn't have the vacuum lines done should i do them

diablone

iTrader: (2)

You really need to read through this link before you blow an engine.

https://www.rx7club.com/showthread.p...threadid=68640

Mahjik

iTrader: (1)

Just FYI, these cars have a "pre-cat" and a "main cat".

The pre-cat is replaced with a "downpipe" and the main cat is replaced with either a hi-flo cat or a midpipe. Before changing out the "main cat", do some research here on the forum. The pre-cat is good to replace with a downpipe as it holds a lot of heat in the engine bay.

SpeedKing

iTrader: (4)

https://www.rx7club.com/showthread.p...61#post2980761

Again, unless there is something wrong with it, e.g., clogged, forget the HFC for now. Get the car tuned up and replace all fluids. Enjoy the car as-is, then think about what direction you want to take it, then read, search, and ask questions. After a while, you'll begin to see who's info is of value and who's FoS.

And BTW, congrats on the buy.