hey guys new to fourm.
went to dealership today and did a compression test on the 93 r1 iam buying tommorw.
my question is, i need some input on the results of the ct.
50k org miles.

results 123
front- 6.0,6.0.5.8
rear 5.9,6.0,5.9


the car runs great, iam just wondering how that scores and if the car is kept pretty much stock and not driven really hard, how much longer would the engine last? if that makes any sense.
dont have much money to rebuild it so thats why iam asking

thanks

 

I doubt you can get a good estimate based on a compression test. Assuming it is the stock engine and it has never had any work, I can't imagine it has too long left. If you can't afford an engine rebuild, this probably isn't the car for you. These are 15 year old cars now. Stuff breaks. You have to be ready to deal with that. Parts can be expensive and hard to find. It can be even harder to find a reliable shop to work on the car. Most people do not understand how to work on these cars and can end up doing a lot of damage. Yes, even dealers. A lot of dealer techs have never even touched an FD before.

 

I'm sure others will be happy to comment on this but those numbers are on the low side and are indicative of a tired engine. It probably runs reasonably well since they are fairly even but it won't be too long until you have hot start problems. If you buy it, expect to rebuild the engine fairly soon.

And the above advice is good.

 

Compression is low, it might run fine right now but I would assume its down on power. If you don't have money in your budget to rebuild the engine I would move off this car and start looking for another. Ideally you want to find a car that can score at least an 8.0 per side. Hope that helps.

 

i know what to expect of the car with the problems it has(as anyone who is looking at it should).
just the car took a good chunk of change out of my pocket and would need to save up for the new engine thats all.
so its really that low?
as for mods on the car. new turbo at 36k,vac hoses replaced,new ast tank,grounding kit,apexi power fc. any any recall fixes. turbos switched to non siq.

 

There is a vital piece of information missing----the dealer should have told you the engine cranking speed for the results in rpm.The results you quote are in the acceptable range for engine speeds up to 250rpm.(see FSM C-10,assuming that the testwas conducted properly with respect to engine temperature.

A more likely failure mode for an engine of this age is coolant seal failure,so you want to pay attention to the cooling system,keeping it in 100%condition.

 

The numbers are all very similar which is a good sign, no large variance from one rotor face to the next, however the numbers arent great. As with any rotary engine with 50k miles on it, it could last 50k miles more or go another 50 feet. Thats one of the fun parts about these cars

Being serious, with 50k miles on the car the previous maintenance will really determine the condition internally of the engine. If it runs good and hot starts fine and you think it is a good price for the overall condition, buy the car. If not, another one will come along.

 

I agree 110% .... 250 rpm and 6's across the board is fine....even a .5 difference would be tolerable....sounds like a healthy motor to me.