# '90 Civic Si Info... **URL:** https://forums.speedlife.net/t/90-civic-si-info/189054 **Category:** PittSpeed Automotive **Created:** [April 5, 2007, 11:48am UTC](https://forums.speedlife.net/t/90-civic-si-info/189054 "2007-04-05T11:48:10Z") **Posts on this page:** 1 **Showing post:** 4
### Author: ![tjZ28](https://avatars.discourse-cdn.com/v4/letter/t/9de0a6/32.png) [@tjZ28](https://forums.speedlife.net/u/tjZ28) #### Post date: [April 5, 2007, 4:09pm UTC](https://forums.speedlife.net/t/90-civic-si-info/189054/4 "2007-04-05T16:09:47Z")
> [@Your all time favorite pump up song.](https://forums.speedlife.net/t/your-all-time-favorite-pump-up-song/29260/32): > > Fairly good unibody around the suspension so usually that is ok. The bushings may need replaced and if you switch shocks the rear bolts like to break. Other than that check for rust or rot on the rocker panels below the doors and rear quarters like to fall apart. That is the chassis i used for my 500 whp drag car and never replaced any bushings and it was tight as new. Best of luck :bigthumb: > [@Which would you buy...](https://forums.speedlife.net/t/which-would-you-buy/29264/11): > > Usual Honda rust spots. Sunroofs can get weak so check that out, make sure it moves back n forth ok, has a good rubber seal on it since those go bad. Kick the floors. I’ve heard some of them get pretty bad floorboard rust, but usually its rare. Suspension on mine has been though tons of changes, autocrosses, track days, etc. So granted its upgraded, but the only stock items I seem to go though fast are front upper ball joints. Also check the rear trailing arm bushings (the huge ones in front of rear wheels, off to the sides of the gas tank) if they haven’t been replaced the chances of them having cracks the whole way though are pretty high. Watch the drivers side motor mounts those can develop cracks also. Usually even if they are beat you can still throw alot of shit at them and they will take it. If I think of more I’ll post it! It’s an original CA car, so hopefully the rust won’t be an issue. But I’ll check. The guy did mention he was throwing in a full bushing kit (not installed) so I’ll take a close look at those… I’m guessing at least a few are bad since he bought the kit. It has a SOHC VTEC '95 Civic EX swap, but uses the stock Si tranny. The motor is all-stock other than being swapped into the '90. The trans is bad (‘carrier bearing’ he says) so I know it needs that. He says that’s pretty common in these trannies? It’s a black car, and he claims very clean. Roughly what do you think a car like this would be worth? Of course the motor swap would throw it out of being a STS car or anything. But it’s mostly gonna be a DD for my 100 mile a day commute. What sort of MPG would I expect? The motor swap was done ‘right’ with the stock computer to the motor so is there any reason I should expect to see at least 30mpg on the freeway? -TJ --- _[View the full topic](https://forums.speedlife.net/t/90-civic-si-info/189054)._