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-   -   to swap or not to swap (https://www.miataturbo.net/general-miata-chat-9/swap-not-swap-45971/)

frostyllama 04-08-2010 07:08 PM

to swap or not to swap
 
I keep on switching back and forth between keeping my good compression 1.6 with not a lot of miles, and wanting a 1.8 for better lower end torque and better reliability; or, if I ever wanted to build it or put a 99 head on it.

-what does decent condition 1.8 go for on average, how about one with a 99 head?
-how much does the total swap cost on average?
-is it really worth it if I plan on not hitting anywhere above 250whp?

My next investment over the next couple of days will be an ms, which I undersand if it is built for my 90 harness will work with a 1.8 no problems Assuming I will use the same harness for the swap.

WonTon 04-08-2010 07:11 PM

there is no replacement for displacement!

a whole whopping .2L's of it...

Bryce 04-08-2010 07:26 PM

I just gained .4 Liters of displacement, keeping the same compression ratio. The difference is night and day!
DO IT!

Cost of a 1.8? Don't know.

The 99 head is highly recommended. It flows much better in stock form than even a ported 94-97 head.

My cost to swap was $180, plus the cost of the motor. It can be done for much less. I bought a used FM swap kit, and am using a 1.6L clutch and flywheel. You could even use the 1.8 throttle body if you'll be controlling idle with MS. Just get a pigtail for the IAC and TPS sensor.

The amount of low end torque you gain with the increased displacement = Instaspool for the smaller turbos.

Fireindc 04-08-2010 07:34 PM

Id personally just boost the 1.6 you have, since its good compression/low miles. If it were a blown 1.6 id say go 1.8.

dustinb 04-09-2010 04:56 PM

I went from 1.6 to 1.8 when I blew up my 1.6. I was concerned about losing a bunch of $$ by not being able to reuse a bunch of my stuff, but the difference in power between the 1.6 and 1.8 was really noticeable. Definitely do the 1.8

frostyllama 04-09-2010 10:35 PM

i'm really starting to lean towards the 1.8... if i find one for a good price and relatively locally i think i will jump on it and sell my good condition 1.6. of course i say this now, tomorrow i will "decide" to 1.6 it lol.

i'm still very open to all input

Sean 04-10-2010 06:25 PM

Do the 1.8L swap I did it after my second motor popped and it was the best thing I ever did. I got the FM swap kit and I picked up a used motor and trans with 65K at the junk yard for $300 so a grand total of $500 and I was off. I got the motor and trans from Crazy Rays you have to pull it your self and the car had an brand new exeedt clutch in it so all was good there.

frostyllama 04-10-2010 07:58 PM


Originally Posted by Sean (Post 554111)
Do the 1.8L swap I did it after my second motor popped and it was the best thing I ever did. I got the FM swap kit and I picked up a used motor and trans with 65K at the junk yard for $300 so a grand total of $500 and I was off. I got the motor and trans from Crazy Rays you have to pull it your self and the car had an brand new exeedt clutch in it so all was good there.

sounds like you got a really good deal.

sptjohn 04-12-2010 02:38 PM

he 99 head is highly recommended. It flows much better in stock form than even a ported 94-97 head.

Agreed with the above...Also the bigger disp. it can't be beaten easily (read cheap)....

Go for it!

gospeed81 04-12-2010 03:17 PM

Put in a 2.0L...FE3.

I still kick myself for not taking the plunge when I had the means to do so.

thagr81 us 04-12-2010 03:22 PM

Just as a basis... I sold a '94 longblock this weekend for $300 (125K, 180 compression across the board) and a '99 head a few months back for $450.

frostyllama 04-12-2010 03:27 PM


Originally Posted by gospeed81 (Post 554969)
Put in a 2.0L...FE3.

I still kick myself for not taking the plunge when I had the means to do so.

emissions, otherwise the decision would have been made by now. no way to get an exhaust manifold that doesn't look modified. and for those of us who don't live in california the fe3 has "high port runners" just like the 99+ heads... search "fe3 and handling" for proof.


Originally Posted by thagr81 us (Post 554975)
Just as a basis... I sold a '94 longblock this weekend for $300 (125K, 180 compression across the board) and a '99 head a few months back for $450.

that's about what i was looking at, great.

wildfire0310 04-12-2010 09:42 PM


Originally Posted by frostyllama (Post 554979)
emissions, otherwise the decision would have been made by now. no way to get an exhaust manifold that doesn't look modified. and for those of us who don't live in california the fe3 has "high port runners" just like the 99+ heads... search "fe3 and handling" for proof.

M2Cup can confirm, but you can use a stock 1.8 manifold. He is using a 1.8 manifold for his turbo step-up. You have to open up a few of the bolt holes if I am correct

Sparetire 04-13-2010 12:39 PM

Heat sheild or wrap FTW. Most inspectors are clueless anyway. As long as they can look at the little diagram and see the little tubes and hoses hooked up they are fine.

gospeed81 04-13-2010 01:54 PM

I'm only saying this because I now know this about myself having been there. And yes I live in an emissions county, although I understand CA inspections are different. Regardless, if you wanted it bad enough you could do the work to make it look OEM. So here goes:





You're a pussy if you don't swap an FE3 in there.





That was purely for your benefit, nothing personal.

frostyllama 04-13-2010 02:30 PM


Originally Posted by Sparetire (Post 555575)
Heat sheild or wrap FTW. Most inspectors are clueless anyway. As long as they can look at the little diagram and see the little tubes and hoses hooked up they are fine.


Originally Posted by gospeed81 (Post 555625)
I'm only saying this because I now know this about myself having been there. And yes I live in an emissions county, although I understand CA inspections are different. Regardless, if you wanted it bad enough you could do the work to make it look OEM. So here goes:





You're a pussy if you don't swap an FE3 in there.





That was purely for your benefit, nothing personal.

two words: ref ticket... and then i'z super fucked. however, despite my better judgment, i'm still thinking about it; and if the car weren't going to be a dd, i would think about it even more seriously.

gospeed81 04-13-2010 02:32 PM


Originally Posted by frostyllama (Post 555667)
, despite my better judgment, i'm still thinking about it.

You're awesome.

webby459 04-13-2010 02:33 PM

At the moment, given how much I've spent building up a 1.8 vs what it would have cost to freshen my still running 1.6 on the cheap, I'd vote keep the 1.6. My outcome is going to be great with the 1.8/9 2000 head, but the expense has been very large.

frostyllama 04-13-2010 02:50 PM


Originally Posted by webby459 (Post 555674)
At the moment, given how much I've spent building up a 1.8 vs what it would have cost to freshen my still running 1.6 on the cheap, I'd vote keep the 1.6. My outcome is going to be great with the 1.8/9 2000 head, but the expense has been very large.

perhaps, but you have yet to drive it sounds like?

webby459 04-13-2010 02:52 PM

Haven't driven it yet, that is correct.


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