1.8 swap w/ 90-93 mspnp - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 09-29-2008, 11:47 PM   #1
Elite Member
Thread Starter
iTrader: (15)
 
Join Date: Sep 2007
Location: Incline Village, NV
Posts: 2,073
Total Cats: 5
Default 1.8 swap w/ 90-93 mspnp

Im going to be doing a 1.8 swap into my 90 which is equipped with a mspnp90-03 i was wondering if any changes would be needed to be made in order to have a successful install. Other than calibrating the tps. setting the req fuel for 460's and setting the timing.

Anything i missed? Anything someone who searches and finds this should know?
thesnowboarder is offline   Reply With Quote
Old 09-30-2008, 12:54 AM   #2
Junior Member
iTrader: (12)
 
Join Date: Oct 2007
Location: Central, NJ
Posts: 487
Total Cats: 1
Default

I'm in the same boat. You missed a few things:

Couple of other things may need to be modified if you want your setup to be close to stock driveability.

Your going to need to run wires and modify your MS to read the VTPS. Your 1.6L wiring harness and MS aren't setup for it. I think DIY has some sort of writeup or info on what needs to be done. Involves a jumper or something. I have a DIY MS so I'm not sure about the particulars.

Also the 1.8L idle control valve works the same as the 1.6L but has a different connector so you'll have to rewire that.

If you don't care about the VTPS which is really a luxury and not REALLY needed you could just get the FM TB adapter plate and slap on your 1.6L TP and idle valve leaving you with a simpler swap over. Basically tricking your MS into thinking you have a bored to 1.8L, 1.6L BP in there.

I on the other hand am leaving the 1.8L TB in place and ditching the idle valve seeing as I don't run AC or PS. I will run mapdot accel. until i get around to wiring the 1.8L VTPS but it is not on the top of my list seeing as I didn't have any issue using it on my 1.6L setup.

It's all up to you on what route and how complicated you want to make things...
MikeRiv87 is offline   Reply With Quote
Old 09-30-2008, 02:43 AM   #3
Elite Member
Thread Starter
iTrader: (15)
 
Join Date: Sep 2007
Location: Incline Village, NV
Posts: 2,073
Total Cats: 5
Default

Things i forgot to add:
I currently have a Vtps from an auto 1.6 on my 1.6 so the vtps mod is done and working.
On the new motor, there is a variable tps, 1.6 TB welded onto the 1.8 mani.

Is there anything else i have overlooked?
thesnowboarder is offline   Reply With Quote
Old 09-30-2008, 02:45 PM   #4
Junior Member
iTrader: (12)
 
Join Date: Oct 2007
Location: Central, NJ
Posts: 487
Total Cats: 1
Default

Quote:
Originally Posted by thesnowboarder View Post
Anything someone who searches and finds this should know?

Looks like your set but I was answering it as you wanted not in one specific setup...
MikeRiv87 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
91 1.6l turbo complete part out. Tony the Tiger Miata parts for sale/trade 63 12-29-2016 03:23 AM
why is my car running like pewp? (tune/datalog) itsMikey MSPNP 3 09-28-2015 07:40 AM
Mystery Engine Trouble. Halp, mt.net! vehicular General Miata Chat 12 09-14-2015 04:17 PM
Help Rough Idle Backwoodsballer General Miata Chat 0 09-04-2015 07:39 AM
TPS + 90-93 mspnp blues StarGehzer MSPNP 4 06-20-2009 06:50 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:30 PM.