Go Back  RX8Club.com > General Topics > New Member Forum
Reload this Page >

New owner Friday - Are these numbers legit?!?

Notices
New Member Forum A place for new members to get their feet wet

New owner Friday - Are these numbers legit?!?

Old 01-09-2019, 08:47 PM
  #1  
New Member
Thread Starter
 
Join Date: Dec 2018
Location: South FL
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Arrow New owner Friday - Are these numbers legit?!?

What is up rx8 club!

I have been wanting an 8 for a while now and its time to finally pulling the trigger.

I had the seller opt for a compression test at Mazda on the 3rd of this month.

I have read about normalizing the numbers and using Foxed.ca's calculator however I want to ask anyway in case i'm overlooking something.

Altitude: 92' | Rpm's: 215

Rotor 1)
+650 kpa
+680 kpa
+690 kpa

Rotor 2)
+670 kpa
+640 kpa
+640 kpa




Does this look ok? Is the motor healthy and making good compression? The engine was replaced in 2016.
aftermarke7 is offline  
Old 01-17-2019, 09:22 PM
  #2  
Registered
 
Join Date: Jul 2018
Posts: 60
Thanks: 0
Thanked 0 Times in 0 Posts
Well you acceptable levels are right up at the top right of the sheet.
830 being standard
650 being minimum (the point at which mazda would replace under factory warranty)
But the rpm at 215 is low compared to the 250 it should be so your actual compression will be a tad higher. If I was the one looking to buy this particular rx-8 I would be saving my pennies and expecting to encounter engine fail in the next year or 2 depending of driving style and mileage driven.

Keep in mind you will most likely encounter other needed repairs along the way and they add up fast. Ignition coil, plugs, and wires will run you around $800 bad coils can very quickly kill an engine. And there is a whole list of things that should be addressed on the rx-8 to insure it's longevity. Go through the forum, read, read then read some more, then come back re read it all. There are so many things that can go wrong and so many improvements that can be made over factory.

Way to much to list in this response. Anyway, if you do decide to purchase the rx-8 definatley get more info on the car, the maintenance that was done, the mileage that the engine got replaced and what not, and definitely ask for a reduction in price based on those numbers.

Hope this helped
Matt Yearwood is offline  
Old 01-17-2019, 10:03 PM
  #3  
Chief Meteobraptologist
iTrader: (1)
 
Loki's Avatar
 
Join Date: Jun 2009
Location: Montreal
Posts: 4,459
Thanked 284 Times in 252 Posts
The minimum is 680, but it's getting close to there. 640 at 215rpm is a hair over 680 at 250. I would not pull this trigger unless price takes that into account and you're ready to get a rebuild soonish. Which is fine, it is a good option, you get a fresh engine that you and only you takes care of. The price of the car just has to reflect this.

800 for coils and plugs is you're shopping at the dealer, you can get them for 250ish elsewhere. The advice to read up is good, check the New and Potential Owners thread.
Loki is offline  
Old 01-17-2019, 10:35 PM
  #4  
Registered
 
Join Date: Jul 2018
Posts: 60
Thanks: 0
Thanked 0 Times in 0 Posts
[QUOTE=Loki

800 for coils and plugs is you're shopping at the dealer, you can get them for 250ish elsewhere. The advice to read up is good, check the New and Potential Owners thread.[/QUOTE]
That's very true,I just didn't want him to be surprised at the cost of them if he did go through the dealer. But there are so many options that have better performance and price, like the bhr kit, I've also heard really good things about the sakebomb kit. But if you did go for aftermarket don't go with the cheapest ones you can find, like a 4 pack for $50 the cost savings is not worth the risk, at least in my opinion. I would just go with what loki said and make sure you have an engine priced out, and that the cost is right (low compression can actually be a good negotiation point on an already good priced rx-8, which is what happened to me) then just make sure to get quality coils for the new motor, I wouldn't use the old ones without knowing there history.
Matt Yearwood is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Chrishoky
Series I Wheels, Tires, Brakes & Suspension
0
09-28-2016 11:28 PM
Coltdogg
Series I Major Horsepower Upgrades
10
05-10-2010 06:56 AM
bryanl
Series I Tech Garage
4
04-27-2008 10:33 PM


Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:

Quick Reply: New owner Friday - Are these numbers legit?!?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.