<![CDATA[Miata head gasket]]>Wondering if anyone knew how difficult replacing a headgasket on 94 miata 1.8, I've never worked on ohc and this is a dohc, also wondering what shops in fargo would be good to make sure the head isn't warped, a guy I work with overheated the engine, put in a new radiator, it now runs fine but uses coolant if this isn't too difficult I was gonna do it for him any info would be great

]]>https://fargostreet.com/topic/7980/miata-head-gasketRSS for NodeThu, 28 May 2026 16:23:37 GMTWed, 11 Oct 2006 20:16:23 GMT60<![CDATA[Reply to Miata head gasket on Fri, 13 Oct 2006 16:19:05 GMT]]>Alrighty, thanks Wes, anyone know how late they are open tonight?

]]>https://fargostreet.com/post/121318https://fargostreet.com/post/121318Fri, 13 Oct 2006 16:19:05 GMT<![CDATA[Reply to Miata head gasket on Fri, 13 Oct 2006 16:04:51 GMT]]>

Bookem wrote:
Just curious if anyone has a head laying around for that miata? 94 1.8

Talk to Nick at Straightline specialties. He did have one. Not sure if he still does though.

]]>https://fargostreet.com/post/121317https://fargostreet.com/post/121317Fri, 13 Oct 2006 16:04:51 GMT<![CDATA[Reply to Miata head gasket on Fri, 13 Oct 2006 15:46:36 GMT]]>Just curious if anyone has a head laying around for that miata? 94 1.8

]]>https://fargostreet.com/post/121315https://fargostreet.com/post/121315Fri, 13 Oct 2006 15:46:36 GMT<![CDATA[Reply to Miata head gasket on Thu, 12 Oct 2006 19:12:42 GMT]]>I take that back. No there isn't one on either engine.

]]>https://fargostreet.com/post/121190https://fargostreet.com/post/121190Thu, 12 Oct 2006 19:12:42 GMT<![CDATA[Reply to Miata head gasket on Thu, 12 Oct 2006 19:09:21 GMT]]>

92BlackTT wrote:
is there a coolant passage in the intake mani and throttle body wes?

Throttle body?.......On my 1.6 there is. Notsure on the 1.8 though. I would assume so.

]]>https://fargostreet.com/post/121189https://fargostreet.com/post/121189Thu, 12 Oct 2006 19:09:21 GMT<![CDATA[Reply to Miata head gasket on Thu, 12 Oct 2006 18:42:10 GMT]]>is there a coolant passage in the intake mani and throttle body wes?

]]>https://fargostreet.com/post/121184https://fargostreet.com/post/121184Thu, 12 Oct 2006 18:42:10 GMT<![CDATA[Reply to Miata head gasket on Thu, 12 Oct 2006 15:31:29 GMT]]>I mentioned to the guy we should do a compression test, but it is using coolant pretty fast(half a gallon every hundred miles or so) it's not leaking externally and it was overheated for an extended period of time, plus I like tearing stuff apart....lol I just got done replacing a head off of a dodge minivan due to a horrible engineering defect, and dsm is off the hook on this one it wasn't the 3.0 it was the 3.8 which is also not mopar, it is made by cummins which I thought was odd since it wasn't a diesel, but their plant in mexico makes gas engines

]]>https://fargostreet.com/post/121160https://fargostreet.com/post/121160Thu, 12 Oct 2006 15:31:29 GMT<![CDATA[Reply to Miata head gasket on Thu, 12 Oct 2006 00:22:26 GMT]]>

weshole wrote:
A compression test isnt a failsafe way to detect a blown headgasket.

yes, I know that, but its a good indicator of one.

]]>https://fargostreet.com/post/121106https://fargostreet.com/post/121106Thu, 12 Oct 2006 00:22:26 GMT<![CDATA[Reply to Miata head gasket on Wed, 11 Oct 2006 23:31:58 GMT]]>which also leads me to wondering what makes you think it is blown? Not a common problem in the Miata 1.6 or 1.8.

]]>https://fargostreet.com/post/121101https://fargostreet.com/post/121101Wed, 11 Oct 2006 23:31:58 GMT<![CDATA[Reply to Miata head gasket on Wed, 11 Oct 2006 23:25:35 GMT]]>

MisterCMK wrote:
Have you done a compression test on the car to see if it is indeed a headgasket?

A compression test isnt a failsafe way to detect a blown headgasket.

]]>https://fargostreet.com/post/121100https://fargostreet.com/post/121100Wed, 11 Oct 2006 23:25:35 GMT<![CDATA[Reply to Miata head gasket on Wed, 11 Oct 2006 23:19:00 GMT]]>Have you done a compression test on the car to see if it is indeed a headgasket?

]]>https://fargostreet.com/post/121099https://fargostreet.com/post/121099Wed, 11 Oct 2006 23:19:00 GMT<![CDATA[Reply to Miata head gasket on Wed, 11 Oct 2006 22:00:49 GMT]]>Thanks guys, sometimes I fear the unknown, and I have never had an ohc engine apart that far but done plenty of other pushrod type engines, again thanks for he input

]]>https://fargostreet.com/post/121077https://fargostreet.com/post/121077Wed, 11 Oct 2006 22:00:49 GMT<![CDATA[Reply to Miata head gasket on Wed, 11 Oct 2006 21:05:45 GMT]]>They are easy. Go to www.miata.net that is full of info and will be an easy fix. The nice thing is that it is not an interference engine so it wont very likely bend valves. But I would do the timing belt and water pump while your in that far. Speaking from experience. Oh, and a Haynes manual is gonna be your best friend.

]]>https://fargostreet.com/post/121064https://fargostreet.com/post/121064Wed, 11 Oct 2006 21:05:45 GMT<![CDATA[Reply to Miata head gasket on Wed, 11 Oct 2006 20:30:55 GMT]]>buy a repair book or factory service manual. i havent worked on a miata before, but from my experience the hardest part of taking the head off was making sure you do everything in the proper order, like remove/install/torque.\

as far as checking the head, mazda, or any off the engine builders in town should be able to do it

]]>https://fargostreet.com/post/121056https://fargostreet.com/post/121056Wed, 11 Oct 2006 20:30:55 GMT