Go Back  Miata Turbo Forum - Boost cars, acquire cats. > General Discussion > Media > Build Threads
Reload this Page >

Greta gets an ecotec swap (Amateur Endurance Racing)

Build Threads Building a motor? Post the progress here.

Greta gets an ecotec swap (Amateur Endurance Racing)

 
Old 06-05-2018, 03:05 PM
  #61  
Elite Member
iTrader: (2)
 
Join Date: Aug 2016
Location: Woostuh, MA
Posts: 3,891
Total Cats: 109
Default

Have you been back to the dyno yet?
ridethecliche is offline  
Old 06-05-2018, 03:30 PM
  #62  
Senior Member
iTrader: (3)
 
Join Date: Dec 2008
Location: KY
Posts: 842
Total Cats: 115
Default

Matching or out-accelerating 6cyl BMWs in a straight line. Sweet baby Jesus. I need to quit being a lazy bum and finish my car.
jpreston is offline  
Old 06-05-2018, 11:47 PM
  #63  
Cpt. Slow
Thread Starter
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,790
Total Cats: 682
Default

Originally Posted by mbirt View Post
I like how similar our setups are, down to the same muffler choice and same model of dyno. Did you guys find any power over the MT basemap when you went back to the dyno?
Yes, but not much. We were able to smooth out that bump in the low RPM, and gained 5ft/lbs. Ended at 186/186 I believe. I'll try to find some dyno charts to post.

Originally Posted by jpreston View Post
Matching or out-accelerating 6cyl BMWs in a straight line. Sweet baby Jesus. I need to quit being a lazy bum and finish my car.
It's pretty incredible. Drives exactly like a Miata, you don't really miss the last ~500rpms. But 6 hours in 4th feels like the 150hp VVT swap did in 3rd on a cold day. Or even 2nd. It just accelerates.

As for the BMWs, M50 and a few poorly driven stock S50/52s, sure. If they start building S52s with cams and S50 intake manifolds, we start wishing we had a J35 or LFX.

As for updates, forums have been pretty slow, so we haven't been updating here, apologies. Last month we got 2nd at TRMP on Saturday, then on Sunday we DNF'd while running a strong 1st due to a cracked oil pan, again. (the repaired Bad Batch pan) This last weekend the car was at Pacific Raceways in Kent, WA. Running 1st/2nd most of the day Saturday, best time of 1:36.4. Then #3 rod decided to vacate the premises. Still not really sure why, but there's a giant hole in the block. Between the cracked oil pan and the blown block, we really haven't had a lot of testing to say why the block exploded. All we have is the AIM dash data saying coolant temp went from 190-210 in ~5 turns, our driver pulled out of a draft thinking that was causing the temp spike, then loud noises and engine shut off. The knock sensor wiring is cut, but also right by the block hole. So if it was cut before it exploded, the PCM could have thrown some really weird timing numbers, causing the failure. Or it could just be from our minimal running with the cracked pan, despite very little low oil pressure warnings.

I wasn't at that race, GreddyGalant was, and is headed up to Area 27 with a couple BMWs this week, so it might be a while before video is posted.
curly is offline  
Old 09-20-2018, 11:48 AM
  #64  
Senior Member
iTrader: (3)
 
Join Date: Nov 2011
Location: Beaverton, OR
Posts: 765
Total Cats: 34
Default

Had a couple more races since then on the new motor we seem to do really well on Saturdays, then break **** on Sundays. Our last race at Portland we podiumed Saturday and took fastest lap, only to have the subframe and motor mounts crack on us the next day. We redesigned the motor mounts to do away with the L shaped brackets, got a new subframe from V8R and reinforced it and got the car fixed for our most recent race at ORP. We won Saturday and got fastest lap again, on Sunday 3 hours in we had the flexplate explode and take out the rear main seal and starter. Car is getting fixed now for the 8 hours of the cascades in a week, which is an endure at PIR that has a Lemans style start. Fingers crossed! I've included some video from the PIR race start below and some photos from ORP. The BMWS in front in the video are both modified S52s. Overall, I'm really pleased with the swap, we've found some weak points to address for endurance racing purposes but in general it's done exactly what I wanted it to do.








greddygalant is offline  
Old 11-29-2018, 12:50 PM
  #65  
Senior Member
iTrader: (3)
 
Join Date: Nov 2011
Location: Beaverton, OR
Posts: 765
Total Cats: 34
Default

Double 1st Place in our last weekend of the season along with 3rd in the nighttime sprint race that was done in monsoon conditions. The offseason will have some minor aero changes and revisions to the fuel fill system, but will stay largely intact for our first race of 2019 at Laguna Seca in January. Here's some photos and some in car footage











​​​​​​
greddygalant is offline  
Old 11-30-2018, 06:42 AM
  #66  
Senior Member
iTrader: (3)
 
Join Date: Nov 2011
Location: Beaverton, OR
Posts: 765
Total Cats: 34
Default

A few detail shots of the engine bay as well as some shots of the start of the 8 hours of the Cascades that we ran for the first time. It included a Le Mans style start which was quite entertaining.









greddygalant is offline  
Old 11-30-2018, 08:08 AM
  #67  
hox
Junior Member
 
Join Date: Feb 2012
Location: Portland,OR
Posts: 75
Total Cats: 2
Default

Great job guys! Greta looks fantastic. Big kudos to some very nice people and a shop (AR) that supports racing these fun cars. I particularly liked the trophy photos, all smiles among good friends. Treasure these times fellas!
hox is offline  
Old 01-16-2019, 03:40 PM
  #68  
Cpt. Slow
Thread Starter
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,790
Total Cats: 682
Default

Our winter updates included trying to make the car a little more slippery. Added fender vents and lowered the splitter, which used to be 4" off the ground, made it closer to 2". We're hoping this made it more efficient while also reducing drag, so while lowering it we also made it shorter by a couple inches. It's all guesses without a wind tunnel, but managed 3rd overall after some fuel pump issues, so we're happy for now.




Had a chance to throw Randy Pobst in the car Sunday, unfortunately we had spent 2 hours chasing a broken pin in the #1 coil harness, so although all the drivers got a chance to drive including Randy, the best we could manage was 33rd of 48 cars running.




We also upgraded the stock APR end plates to a set of larger ones Kazespec made for us.

Stock:



KazeSpec:







curly is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1993z32
Dynos and timesheets
275
05-11-2017 08:11 PM
wackbards
Meet and Greet
20
03-06-2016 01:58 PM
Chad Dunn
Engine Performance
11
02-26-2016 03:11 AM
MiataN00b4days
Meet and Greet
12
02-25-2016 12:28 AM
g_reichow
MEGAsquirt
1
02-22-2016 09:18 PM


Thread Tools
Search this Thread
Quick Reply: Greta gets an ecotec swap (Amateur Endurance Racing)


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.