1.6L 2560r record attempt - Page 50 - 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 11-26-2014, 05:46 PM   #981
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

I will eventually do a manifold but not now.

Attached Thumbnails
1.6L 2560r record attempt-10811218_730911916991224_1779570606_n.jpg  
nitrodann is offline   Reply With Quote
Old 11-26-2014, 06:05 PM   #982
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

How much weight came off that crank?
EO2K is offline   Reply With Quote
Old 11-26-2014, 06:41 PM   #983
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

I really should have weighed it because I knew everyone would ask. I dont know. 25% maybe more?

If I didnt mention it this is a mystery engine. Came from a very well known serious engine builder, Supposedly had 10 hours on it in an IPRA car (Improved production racing association) it was a lucky dip, we had no idea that we would find this crank, the sump baffle, Ti retainers the amazing port work etc etc. We just knew it was build by a well respected race engine guy for a series that allows a lot of mods.

It was purchased on ebay for super super cheap, we just tore it down measured everything and put it back together with what it needed, which was bearings, we honed and decked the block and decked the head. CC'd it for comp, chose a head gasket (Maruha .080), took the sharp edges off the pistons and put it together. Added the bigger turbo, modded the mani for ext gate etc and we chose to use an external pressure control valve to attempt to alleviate oil pump failure. The oil pump valve is chocked closed.

Dann
nitrodann is offline   Reply With Quote
Old 11-26-2014, 07:03 PM   #984
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,365
Total Cats: 1,325
Default

Quote:
Originally Posted by nitrodann View Post
(Maruha .080)
What made you choose that gasket? Did you take into account the squish zone alteration (i.e. is the block decked down ~.040" to put the squish area measurement back to where it needs to be)? .080" squish is approximately 2x what is ideal, and that kind of squish will reduce power, reduce mixture homogeneity, and promote detonation.
Savington is offline   Reply With Quote
Old 11-26-2014, 07:07 PM   #985
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

The compression was too high. it doesnt have .080 squish because the piston is about .040 above deck height after machining. Im definately not pretending to be an engine expert, Ive had 2 engine experts involved in putting it back together right, and we changed things like rings gaps and stuff to suit. Ive built a dozen or more engines but Ive never done anything as silly as this so I got a lot of advice. I hope it all works out.

Its a bit 'suck it and see' but its an 11.5:1 engine that will get 20 or 30psi thrown at it, so the whole thing is suck it and see, really.

Dann
nitrodann is offline   Reply With Quote
Old 11-27-2014, 01:42 AM   #986
Senior Member
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 783
Total Cats: 23
Default

inlet or exhaust Leafy?

and what is z series?
mx5-kiwi is offline   Reply With Quote
Old 11-27-2014, 09:48 AM   #987
Junior Member
iTrader: (2)
 
Join Date: Apr 2010
Location: albion, mi
Posts: 303
Total Cats: 17
Default

Mx5-kiwi, here is the thread I believe leafy is referring to:

https://www.miataturbo.net/build-thr...e-build-62722/
glade is offline   Reply With Quote
Old 11-27-2014, 11:37 AM   #988
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,092
Total Cats: 90
Default

Quote:
Originally Posted by mx5-kiwi View Post
inlet or exhaust Leafy?

and what is z series?
both. Look at dem intake ports in that thread glade linked, ******* super bike mega ports.
Leafy is offline   Reply With Quote
Old 11-28-2014, 07:13 PM   #989
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

Attached Thumbnails
1.6L 2560r record attempt-img_20141128_091434.jpg  
nitrodann is offline   Reply With Quote
Old 11-28-2014, 08:25 PM   #990
Elite Member
iTrader: (1)
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 4,682
Total Cats: 216
Default

When I read "knife-edge" on the previous page I nearly laughed. But now I see it was actually bull-nosed on the leading edge and knife'ed on the trailing edge. I approve.
Full_Tilt_Boogie is offline   Reply With Quote
Old 11-30-2014, 05:18 AM   #991
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

getting close.

















The cooler piping I redid so that stock undertray fits without the piping stickout out and big holes cut in it. Happy so far.
Unfortunately the filter will have to go right on the end of the turbo..

Dann
nitrodann is offline   Reply With Quote
Old 11-30-2014, 12:48 PM   #992
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,365
Total Cats: 1,325
Default

Put a metal plate over the freeze plug in the front of the head before it blows out.
Savington is offline   Reply With Quote
Old 11-30-2014, 04:44 PM   #993
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

Thank you .
Its glued in with aviation sealant.

Why does this one have more of a chance of coming out when the dozen other welsh plugs stay in?

Cheers,
Dann
nitrodann is offline   Reply With Quote
Old 11-30-2014, 04:50 PM   #994
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,107
Total Cats: 518
Default

If it's happened once to someone else 5 years ago, it was enough for me to spend 5 minutes tracing the bottom edge of the old neck and copying out of .5" bar.

NOTE: you need to curve the edges or it won't fit.
curly is offline   Reply With Quote
Old 11-30-2014, 05:17 PM   #995
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

But every car on the planet has a dozen or more welsh plugs just tapped in and glued, What makes this one different?

Dann
nitrodann is offline   Reply With Quote
Old 11-30-2014, 05:33 PM   #996
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,365
Total Cats: 1,325
Default

Quote:
Originally Posted by nitrodann View Post
Thank you .
Its glued in with aviation sealant.

Why does this one have more of a chance of coming out when the dozen other welsh plugs stay in?

Cheers,
Dann
Because iron expands less than aluminum. I've seen that exact plug pop out of that exact place multiple times. It's not if, it's when.
Savington is offline   Reply With Quote
Old 11-30-2014, 05:35 PM   #997
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

Okay, cheers.

Dann
nitrodann is offline   Reply With Quote
Old 11-30-2014, 07:57 PM   #998
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,092
Total Cats: 90
Default

Quote:
Originally Posted by Savington View Post
Because iron expands less than aluminum. I've seen that exact plug pop out of that exact place multiple times. It's not if, it's when.
Is the port on the head machined different for the miata bps vs the fwd bp? The fwd pbs have just a freeze plug there and nothing else, iirc.
Leafy is offline   Reply With Quote
Old 12-02-2014, 10:15 PM   #999
Elite Member
Thread Starter
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

This thing is ALMOST together. I'll get some pics up in the next hour or 2.

Still needs vac hoses, Mac valve mounted. Oil cooler, filter and pressure reg hoses done.. And the rest of the front main duct. Waiting on some sheets to be guillotined for us.

Probably only have time to do half a tune and put 15 psi in for now.
Edit: because trying to hit the track this weekend.
nitrodann is offline   Reply With Quote
Old 12-02-2014, 11:05 PM   #1000
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

Quote:
Originally Posted by nitrodann View Post
... only have time to do half a tune ... trying to hit the track this weekend.
Man, I don't mean to be a dick but I'm not sure I'd ever use your shop after a comment like that. I'm not sure how things work in Austria but we generally expect people to finish jobs like this once they are paid for.
EO2K is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Raleigh: Fiberglass headlight scope, 1.6L ECU, AFM, Hardtop latches, more bigmackloud Miata parts for sale/trade 13 09-22-2017 01:34 PM
91 1.6l turbo complete part out. Tony the Tiger Miata parts for sale/trade 63 12-29-2016 03:23 AM
Need help - Stock Balancer and Fastforward overlay pulleys Frank_and_Beans Supercharger Discussion 13 09-12-2016 09:17 PM
UEFI boot help needed mgeoffriau Gaming 38 03-02-2016 04:59 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 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 06:54 PM.