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-   -   Too good to be true? (cheap rods) (https://www.miataturbo.net/engine-performance-56/too-good-true-cheap-rods-61852/)

flounder 11-24-2011 10:36 AM

Too good to be true? (cheap rods)
 
http://www.ebay.com/itm/Escort-GT-Ma...item27c09ffa90

I'm in the market for some stronger rods and the price is very tempting.

Yay or nay?

flounder 11-24-2011 11:30 AM

Isn't the 22mm pin size larger than stock?

buffon01 11-24-2011 11:44 AM

Look up a thread by Leatherface24 he got some of those ebay rods... I don't know what he did with them but there was a lot of data in the posts.

flounder 11-24-2011 06:26 PM

I read through leatherfaces thread and ended up buying the crankshaft depot rods instead. I believe these are the same ones he purchased, had the correct small end specs, and were only a dollar more delivered.

http://www.ebay.com/itm/MAZDA1-6-1-8...34087019946652

Hopefully they will work out for me.

buffon01 11-24-2011 09:10 PM

Good luck brosef :bigtu:

Post results

Miater 11-24-2011 09:54 PM

In for results. Also what pistons and size?

flounder 11-27-2011 04:30 PM


Originally Posted by Miater (Post 799022)
In for results. Also what pistons and size?

As of right now, the stock 99 pistons. I don't plan on changing displacement but may go with some 94-97 slugs. I believe they will drop compression from 9.5:1 to 9:1? If I can find a cheap set I may go that route?

buffon01 11-27-2011 04:37 PM

Automatics have lower comp ratio

flounder 11-27-2011 04:39 PM

Are the 1.8 MT na's 9.5cr too?

buffon01 11-27-2011 05:26 PM

I believe the 94 motors have 8.8:1. The 95-97 have 9.0:1. Then the 99-00 have 9.5:1. I also recalled reading somewhere that the automatics have lower comp ratio than the manuals. I believe all the comps ratios are manual.

Savington 11-27-2011 10:58 PM

Comp ratio in all 1.8s is the same regardless of transmission. The 1.6 has a lower compression motor for the autos.

buffon01 11-27-2011 11:49 PM

Well that clear things out...

miatauser123 11-28-2011 04:06 PM

I was just reading that the autos had a lower compression ratio, might just be the 1.6 but the 1.8 has seen some compression changes..

1.6 Auto: 9.0:1
1.6 5spd: 9.4:1

1.8 99-00: 9.5:1
1.8 2001+: 10:1

Source: http://www.jspecauto.com/files/jspec...chcenter5b.htm

Braineack 11-28-2011 06:15 PM

(Sent from phone via capitalism)

There's a low comppression 94 piston iirc. Wasn't published but its know lore that was lowest compression year.

flounder 11-28-2011 07:50 PM

10 Attachment(s)
Rods showed up today. They are CAT's, look very nice, and according to the spec sheet the 4 are all within a gram of each other.

Unfortunately I won't know if they're any good for a while....:x:

IcantDo55 11-30-2011 03:29 AM

Subscribed.

falcon 11-30-2011 05:21 AM

I am making 297whp out of a 1.6L right now with ebay rods spinning to 8k RPM. I bought them from a different vendor, they were cheaper than what you have listed there but they were cat power too so my bet is they are the same. I abuse my car too, it's been taken to two hillclimbs now, about 5 track days and a few nights at the drag strip.

Buck65 11-30-2011 07:30 AM

Glad to hear these are a fairly solid rod, I have a set in my build (297/278 FWHP) albeit bought from a European ebay vendor and for considerable more than you guys get them for ($280)

falcon 11-30-2011 07:40 AM

Yeah I think I paid like $160 + $40 for the arp bolt upgrade.

flounder 11-30-2011 09:12 AM

Good to hear they are holding up! I'm shooting for January to have the engine assembled and ready to install.


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