going turbo high mile 1.6l - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 10-17-2011, 09:22 PM   #1
Junior Member
Thread Starter
 
Join Date: Jul 2011
Posts: 66
Total Cats: -4
Exclamation going turbo high mile 1.6l

so have had a 1.6l na in the garage for a few months bought it for a grand with 190k miles, drivetrain is really sloppy on downshifts, leaks oil from front and rear seal. right rear axle seal is leaking, exhaust leak as well lol man i have my hands full.

now i have a diy turbo kit a garrett t25,intercooler,piping,fm manifold,supra injectors 305cc, few other goodies. should i just slap this **** on and go or should i pull the motor, replace the rings and put in low comp pistons...and put a megasquirt in? im worried about the short nose crankshaft issue and reliability in general. any input that can be given will be appreciated.
350zMiata is offline   Reply With Quote
Old 10-18-2011, 03:38 AM   #2
Junior Member
iTrader: (1)
 
Join Date: Aug 2011
Posts: 53
Total Cats: 1
Default

I think it depends on your goals, personally I would go buy a JDM low mile engine and transmission combo, fix the axle seal and you are going to need to upgrade the exhaust for the turbo. The stock low mile engine can handle more power than the turbo kit and 305cc injectors can put out with a good tune. You can but a JDM 1.6 with trans for $650 plus shipping and this is complete with a starter, clutch, power steering pump, alternator, etc and these are low miles. I have used these engines in civics, toyota supras and a 1.8 swapped into a 1990 miata, all have worked perfect. You could also swap to a JDM 1.8 for a little more money.

Check out EBAY item #330623657187
#170710658264
hattrick is offline   Reply With Quote
Old 10-18-2011, 07:51 AM   #3
Junior Member
 
Join Date: Oct 2011
Location: New Hampshire
Posts: 322
Total Cats: 53
Default

If you aren't in a hurry, why not pull the motor and do it right first time? If you have to daily drive the car, buy and rebuild a cheap 1.6l and have it ready to go before you break the first one.

And the short-nose crank generally doesn't just break itself. You, or someone else, have to screw up a timing belt change. If the pulley isn't wobbling now and hasn't been tampered with recently, it's probably fine.
adamiata is offline   Reply With Quote
Old 10-19-2011, 06:17 PM   #4
Elite Member
iTrader: (10)
 
soviet's Avatar
 
Join Date: Jan 2010
Location: VA
Posts: 3,518
Total Cats: 259
Default

IMO smartest option would be to buy a used lower-mileage motor. Anything with under 100k basically.
soviet is offline   Reply With Quote
Old 10-19-2011, 06:27 PM   #5
Junior Member
iTrader: (1)
 
Join Date: Aug 2011
Posts: 53
Total Cats: 1
Default

unless you are going to build for power, buy a low mile JDM engine, you wont be sorry.
hattrick is offline   Reply With Quote
Old 10-19-2011, 07:19 PM   #6
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,010
Total Cats: 583
Default

Mine is at 187K with a locktite fix on the short-nose crank. Doing just fine. If it goes, JDM sounds like a great option.
hornetball is offline   Reply With Quote
Old 10-19-2011, 07:53 PM   #7
Elite Member
iTrader: (6)
 
Join Date: Nov 2007
Location: Southlake,Texas
Posts: 3,251
Total Cats: 17
Default

If you got a 350z to DD, I'd say slap the turbo on and blow it up. Why not?
Bond is offline   Reply With Quote
Old 10-20-2011, 12:13 PM   #8
Elite Member
 
Join Date: Feb 2008
Location: Victoria, BC
Posts: 2,322
Total Cats: 12
Default

Just turbo it and enjoy the car. It'll be fine. And if it breaks, so what? Most people here are suggesting you put a stock replacement motor in it first, so why not totally bag the one that's in it first? It's not like taking the turbo parts on and off is that big of a deal. "Doing it right the first time" is such an easy thing to say, but the idea of "right" changes.
dustinb is offline   Reply With Quote
Old 10-23-2011, 10:39 PM   #9
Junior Member
iTrader: (2)
 
Join Date: Feb 2011
Posts: 110
Total Cats: 1
Default

After building a motor in my last car, I wouldn't do it again unless I was going for big power again. If you turbo the existing motor you can iron out the bugs for the swapped motor.

JDM is the answer IMO. I'm running one right now and it looked like new when I got it. It's extremely cheap and you get a 90 day warranty. There is no warranty on a rebuilt motor and you don't get all the accessories.
Wildanimal is offline   Reply With Quote
Old 10-23-2011, 11:15 PM   #10
Elite Member
iTrader: (7)
 
Join Date: Jan 2007
Location: Renton Washington
Posts: 1,742
Total Cats: 3
Default

Fix the oil leaks and turbo it.
SKMetalworks is offline   Reply With Quote
Old 10-25-2011, 04:21 AM   #11
Newb
 
Join Date: Jul 2011
Posts: 17
Total Cats: 0
Default

i put nitrous on mine at just over 200k, then took it off and turboed it. i beat the **** out of it everytime i drive it. it was still running fine when i pulled it last year to re-build it and put h-beams in.
boosted90 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Another Cast Manifold Corky Bell Prefabbed Turbo Kits 18 11-22-2016 10:01 PM
01-05 Fab9 PNP COPs (used) FrankB Miata parts for sale/trade 6 09-30-2015 12:48 PM
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 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 09:53 PM.