Login    Register
  • Author
    Message

Rebuild 1.6 or change for 1.8??

Postby back_in_black » Tue, 30 Sep 2014 12:03 +0000

I need talking out of something.

Might have my hands on a 80000km 1.8 engine and wondering if it's worth fitting instead of fixing my 1.6 with at least 180000km on it?

The 1.6 is going great but is burning some oil and has some bad vacuum like issues. Need to do some more fault finding but it's looking like rings or a valve problem.

Has anyone done this job and has it been worth it?

Changing would defo be cheaper than a rebuild but I'd like to keep the 1.6 so very torn :?

Any advice either way would appreciated.

Thanks

Alan
back_in_black
***

User avatar
 
Posts: 496
Joined: Sat, 02 Jul 2011 9:46 +0000
Location: Kerry

Re: Rebuild 1.6 or change for 1.8??

Postby rhysmate » Tue, 30 Sep 2014 3:18 +0000

Boost!!!
bend the rules............rule the bends

--Turbo Mx5 Build Thread Of Epic Power--
rhysmate
****

User avatar
 
Posts: 862
Joined: Thu, 16 Jun 2011 4:17 +0000
Location: CORK

Re: Rebuild 1.6 or change for 1.8??

Postby back_in_black » Tue, 30 Sep 2014 7:37 +0000

rhysmate wrote:Boost!!!


Which? 1.6 or 1.8?
back_in_black
***

User avatar
 
Posts: 496
Joined: Sat, 02 Jul 2011 9:46 +0000
Location: Kerry

Re: Rebuild 1.6 or change for 1.8??

Postby rhysmate » Tue, 30 Sep 2014 12:56 +0000

1.6 is cheaper tax but 1.8 will make more power. Throw in a 1.8 if you dont mind tge tax and insurance
bend the rules............rule the bends

--Turbo Mx5 Build Thread Of Epic Power--
rhysmate
****

User avatar
 
Posts: 862
Joined: Thu, 16 Jun 2011 4:17 +0000
Location: CORK

Re: Rebuild 1.6 or change for 1.8??

Postby AndyJF » Tue, 30 Sep 2014 1:40 +0000

Id go 1.8 with lightened flywheel. More power and would be nice and revvy.

Sent from my GT-I9505 using Tapatalk
AndyJF
***

User avatar
 
Posts: 429
Joined: Sun, 30 Sep 2012 10:25 +0000
Location: Athy Co. Kildare

Re: Rebuild 1.6 or change for 1.8??

Postby 93 Mk1 » Tue, 30 Sep 2014 7:36 +0000

What exactly is involved in swapping the 1.8 motor in ? I was always lead to believe that it's not a straight swap but
I never really looked into it in detail.
1992 Eunos Roadster BRG V-Spec 1.6
93 Mk1
****

User avatar
 
Posts: 571
Joined: Fri, 20 Jun 2008 3:49 +0000

Re: Rebuild 1.6 or change for 1.8??

Postby back_in_black » Tue, 30 Sep 2014 8:43 +0000

courtesy of flyingmiata.com.
1.8swap.pdf
You do not have the required permissions to view the files attached to this post.
back_in_black
***

User avatar
 
Posts: 496
Joined: Sat, 02 Jul 2011 9:46 +0000
Location: Kerry

Re: Rebuild 1.6 or change for 1.8??

Postby MX5Spares » Wed, 01 Oct 2014 7:10 +0000

I have sold several 1.8 engines for fitting to 1.6 and its simple enough.You will need both manifolds,engine mounting brackets,air rossover pipe,top rad hose and some small wiring to thermo switch as 1.8 is on the rear and 1.6 is front but I have a lad you can talk to that done it recently ,all in1 day .
MX5Spares
*****
 
Posts: 2235
Joined: Wed, 22 Sep 2010 4:59 +0000
Location: dublin,

Re: Rebuild 1.6 or change for 1.8??

Postby back_in_black » Wed, 01 Oct 2014 5:39 +0000

going to have to rethink this one.

Just did a compression test and got 198, 192, 190 and 192.

I know this the wrong section but could it still be the valves? or simply a dodgy pcv valve?
back_in_black
***

User avatar
 
Posts: 496
Joined: Sat, 02 Jul 2011 9:46 +0000
Location: Kerry

Re: Rebuild 1.6 or change for 1.8??

Postby MX5Spares » Wed, 01 Oct 2014 9:15 +0000

The pcv wont change the compression whatever about the valves but most likely piston rings or worn cylinder bores.Dont waste your money rebuilding it as it does not work out well really ,according to experts on NUTZ and its major expensive like 1200e to 1500e incl parts and labour ,machining etc.
MX5Spares
*****
 
Posts: 2235
Joined: Wed, 22 Sep 2010 4:59 +0000
Location: dublin,

Re: Rebuild 1.6 or change for 1.8??

Postby rhysmate » Thu, 02 Oct 2014 9:30 +0000

If youre close to Cork ill help as well.

If i could go back i would have done the 1.8 swap day one
bend the rules............rule the bends

--Turbo Mx5 Build Thread Of Epic Power--
rhysmate
****

User avatar
 
Posts: 862
Joined: Thu, 16 Jun 2011 4:17 +0000
Location: CORK

Re: Rebuild 1.6 or change for 1.8??

Postby 93 Mk1 » Thu, 02 Oct 2014 11:43 +0000

autocheck wrote:I have sold several 1.8 engines for fitting to 1.6 and its simple enough.You will need both manifolds,engine mounting brackets,air rossover pipe,top rad hose and some small wiring to thermo switch as 1.8 is on the rear and 1.6 is front but I have a lad you can talk to that done it recently ,all in1 day .


Handy to know !
1992 Eunos Roadster BRG V-Spec 1.6
93 Mk1
****

User avatar
 
Posts: 571
Joined: Fri, 20 Jun 2008 3:49 +0000

Return to Engine Mods

Who is online

Users browsing this forum: No registered users and 2 guests

cron