How much do motors rock? - 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 03-24-2008, 09:53 PM   #1
Elite Member
Thread Starter
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default How much do motors rock?

How much clearance does the compressor need between between it and the shelf?
Saml01 is offline   Reply With Quote
Old 03-24-2008, 10:13 PM   #2
I'm Miserable!
iTrader: (5)
 
Join Date: Sep 2005
Location: SLC, Utah
Posts: 1,591
Total Cats: 0
Default

depends on your mounts a little too.
zoom2zoom is offline   Reply With Quote
Old 03-24-2008, 10:21 PM   #3
Elite Member
Thread Starter
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Well lets say bare minimum.
Saml01 is offline   Reply With Quote
Old 03-24-2008, 10:26 PM   #4
Elite Member
iTrader: (7)
 
samnavy's Avatar
 
Join Date: Apr 2006
Location: VIRGINIA BEACH, VA
Posts: 6,020
Total Cats: 175
Default

The engine rocks towards the passenger side under power... so I'd think probably 1/2" for good measure would be fine. There's a lot of material there on the fender seam to Dremel youself a little more clearance if needed.
samnavy is offline   Reply With Quote
Old 03-24-2008, 10:34 PM   #5
Elite Member
Thread Starter
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

My T25 is causing more problems then its worth. I already notched it, but with my stupid 90 degree straight down clocking(to bad I didnt know that was not a good idea) it leaves about 2 mm of clearance.

I'm going to try and grind off some more of the material at the notch, and also file down the stupid flange on the turbo to gain some clearance, as well as slightly clocking it inboard -which leads me to my next question. Does the waste gate rod have to be perfectly straight, or can it be on a slight angle?
Saml01 is offline   Reply With Quote
Old 03-24-2008, 10:53 PM   #6
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

If it's not perfectly straight it can bind, which can lead to overboost, which can lead to *BOOM*. Good thing MS has an overboost feature.
cjernigan is offline   Reply With Quote
Old 03-24-2008, 11:00 PM   #7
Junior Member
iTrader: (4)
 
Join Date: Oct 2007
Location: santa cruz
Posts: 246
Total Cats: 0
Default

Go to youtube and look at some turbo miata dyno runs. You'll get a good idea how much the engine leans over due to torque (as Samnavy indicated).
chucker is offline   Reply With Quote
Old 03-24-2008, 11:22 PM   #8
Elite Member
Thread Starter
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Quote:
Originally Posted by chucker View Post
Go to youtube and look at some turbo miata dyno runs. You'll get a good idea how much the engine leans over due to torque (as Samnavy indicated).
Good idea. I just did.

It rocks into one direction when on power, but doesnt really rock into the opposite direction when off throttle. So I think a half inch will be plenty. I can do that pretty easily with what I plan to grind out.
Saml01 is offline   Reply With Quote
Old 03-25-2008, 12:37 AM   #9
Elite Member
iTrader: (3)
 
Join Date: May 2006
Location: Houston, TX
Posts: 2,900
Total Cats: 0
Default

a set of vice grips and a 3 lb sledge and you can easily gain 3/8 - 1/2" more clearance... that's how I got space for my compressor and downpipe.
Arkmage is offline   Reply With Quote
Old 03-25-2008, 02:05 AM   #10
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

WTF are the vice grips for?
jayc72 is offline   Reply With Quote
Old 03-25-2008, 02:08 AM   #11
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

I assume you would latch them onto the shelf, and start hitting them with the hammer...

Bryce is offline   Reply With Quote
Old 03-25-2008, 10:17 AM   #12
Elite Member
Thread Starter
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Quote:
Originally Posted by Bryce View Post
I assume you would latch them onto the shelf, and start hitting them with the hammer...

I guess thats if you want to bend down the rear shelf.
Saml01 is offline   Reply With Quote
Old 03-25-2008, 10:21 AM   #13
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Lexington, SC
Posts: 2,084
Total Cats: 0
Default

i gotta try that vice grip thing, i've used up all of my cutting/grinding wheels/stones on my dremel and really don't want to get in there with an angle grinder that close to my hardlines
mazda/nissan is offline   Reply With Quote
Old 03-25-2008, 11:31 PM   #14
Elite Member
iTrader: (3)
 
Join Date: May 2006
Location: Houston, TX
Posts: 2,900
Total Cats: 0
Default

you clamp on the vice grips and bend it down as far as you can... then you use the hammer to pound it flat up against the other metal (roughly 90* downward from it's original position)
Arkmage is offline   Reply With Quote
Old 03-27-2008, 11:14 PM   #15
I'm Miserable!
iTrader: (5)
 
bryantaylor's Avatar
 
Join Date: Dec 2006
Location: jacksonville, fl
Posts: 1,720
Total Cats: 0
Default

get some MMR mounts and then you dont have to worry about the motor moving at all
bryantaylor is offline   Reply With Quote
Old 03-27-2008, 11:18 PM   #16
Junior Member
iTrader: (1)
 
Join Date: Mar 2007
Location: South Florida
Posts: 491
Total Cats: -1
Default

I have less than a 1/4 inch on mine...no problems.
mrtonyg is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
elesjuan's mediocre 95 Miata adventure (google fiber edition) elesjuan Build Threads 8 02-16-2016 09:36 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Nuke Mars! Joe Perez Current Events, News, Politics 8 09-30-2015 05:41 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM
Advanced Engine Dynamix Review (dead oil pump content) itsMikey Insert BS here 0 09-05-2015 03:56 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 04:12 AM.