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Author Topic: Head replacement  (Read 1042 times)

Don Youngmark

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Head replacement
« on: September 26, 2017, 10:11:44 AM »

Brand new here so I hope if this question has been asked you will forgive me.
My father has a 93 X-2. Car had overheated and head is warped. From what I understand we can pull the head off of his spare car(non Turbo) and replace the head on the turbo engine. I think I understand the exhaust cam will need to be switched as well but it should work.
Are there any other suggestions or possible head swaps that may work without tearing down his spare car?
Thanks in advance.
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WashiestSnake

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Re: Head replacement
« Reply #1 on: September 26, 2017, 06:04:16 PM »

If you don't want to use the n/a head you can get a Miata head from a junkyard. The only difference is the exhaust cam, and instead of a Distributor it uses CAS. All you would have to do would be swap the exhaust cam, exchange the valbe cover, and drop the dizzy in.
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1991 Mercury Capri 68,xxx Miles--Project(AWD)
1996 Lincoln Continental -- The Boat(Given to my Brother)

Don Youngmark

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Re: Head replacement
« Reply #2 on: September 26, 2017, 07:15:46 PM »

Would that be any Miata head (1.6) or is there anything speacial about the head to look for. Again these are not real familiar to me.
Thanks for any help that you may offer.
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SHOwn

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Re: Head replacement
« Reply #3 on: September 26, 2017, 10:24:13 PM »

IDK about the Miata head but you can search this forum for "difference n/a" and you will get tons of history on your question. my searching turned up that the cams are different and the turbo has the knock sensor as well. You might be able to pick up a whole running XR2 cheap at this time of year, a lot of owners don't want to store their cars another winter. Check Craigslists within about 150 miles of your location if you have storage space, unless you like changing cam bearings. Can I recommend ARP head studs and a Cometic head gasket? Where are you located?
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R. Powell
'91 XR2, LM 16" Chrome Drifters, White Gauge Faces, Kuhmo 40's, Big Brake UG, 2.5" Mandrel Bent CATback, BMW318 Heated Seats, `94 console, '99 Dodge Neon Spoiler, '94 XR2 Sideskirts Bumpers and taillights, Fresh Basecoat-Clearcoat Cardinal Red (Jul2014), vj11/vj14 hybrid, manual boost CTL.

Don Youngmark

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Re: Head replacement
« Reply #4 on: September 27, 2017, 07:24:43 AM »

Just north of Minneapolis. I have been checking Craigslist but no parts available. I am OK with the cam and parts swap, it's just getting the proper head that seems to be the most challenge.
Thanks.
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WashiestSnake

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Re: Head replacement
« Reply #5 on: September 27, 2017, 08:26:22 AM »

Yea it would be any 1.6l Miata head. Definetly agree with SHOwn spend the extra 300$ and get ARP studs and a Cometic headgasket. They really are a good peice of mind, especially if you ever plan to increase horsepower.
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1991 Mercury Capri 68,xxx Miles--Project(AWD)
1996 Lincoln Continental -- The Boat(Given to my Brother)

Rocketman

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Re: Head replacement
« Reply #6 on: September 27, 2017, 12:32:21 PM »

The Miata mounts its thermostat on the timing belt side of the head, so you will need to block that off.
The Capri head has a freeze plug installed in the port in question, I believe.
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"


azgtx

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Re: Head replacement
« Reply #7 on: September 27, 2017, 08:06:05 PM »

Matt's back, quite the journey young man.
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greywolf27030

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Re: Head replacement
« Reply #8 on: September 28, 2017, 06:17:29 PM »

Nice to see you back.  Do you have any feet left?

Jack Byrd
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Don Youngmark

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Re: Head replacement
« Reply #9 on: October 04, 2017, 05:32:40 PM »

To block off the thermostat location on the new Miata head, will it require a plug or bolt?
Any tips will be appreciated.

Don
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WashiestSnake

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Re: Head replacement
« Reply #10 on: October 04, 2017, 06:13:15 PM »

Use a Freeze plug. Th ats actually good that Matt saved you like that I had completely forgot that the Miata routes coolant differently. I'm pretty sure you could just use a miata reroute kit to do it.
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1991 Mercury Capri 68,xxx Miles--Project(AWD)
1996 Lincoln Continental -- The Boat(Given to my Brother)

Don Youngmark

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Re: Head replacement
« Reply #11 on: October 04, 2017, 07:32:45 PM »

Not sure what you mean by Miata reroute kit.
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SHOwn

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Re: Head replacement
« Reply #12 on: October 04, 2017, 08:39:57 PM »

Well, that would be one of these, but at over $300 that sounds pricey..
https://www.flyinmiata.com/catalogsearch/result/?q=reroute+kit
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R. Powell
'91 XR2, LM 16" Chrome Drifters, White Gauge Faces, Kuhmo 40's, Big Brake UG, 2.5" Mandrel Bent CATback, BMW318 Heated Seats, `94 console, '99 Dodge Neon Spoiler, '94 XR2 Sideskirts Bumpers and taillights, Fresh Basecoat-Clearcoat Cardinal Red (Jul2014), vj11/vj14 hybrid, manual boost CTL.

greywolf27030

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Re: Head replacement
« Reply #13 on: October 05, 2017, 05:13:01 PM »

Looks like a lot of machined parts there, that and the engineering is where the cost is.  Still expensive though.

Jack Byrd
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Don Youngmark

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Re: Head replacement
« Reply #14 on: October 30, 2017, 06:36:42 PM »

Well, thank you for your help.
We did order a head from Clearwater head in Florida.
We brought it to a local head shop and supposedly they changed the exhaust cams.
When my father got the car back he thought the car did not have as much power as before.
Almost thinking the guy at the head shop charged him but did not change the cams.
Would anyone be able to identify the cams by the numbers. one is a B61P and one is a B660.
I hope someone may be able to say which cams they may be. Are these the Turbo cams??
Thanks again for your help and support. My 91 Year old father wants his power back.
Don
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