Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

Reply
 
LinkBack Thread Tools Display Modes
Old 10-07-2015, 09:43 AM   #1
Registered User
 
Join Date: Dec 2014
Location: California
Posts: 244
Trying to ascertain the relative position of the 986 transmission - Boxster EV proj

Folks,

As some of you are aware, I am converting my '04 Boxster to Electric. The project is going slow but progressing. At this time I have the drive train assembled and mounted using the TX mounts and the wheel hubs are connected. See pic.

I am planning to use the stock engine mount to support/mount the DC motor in the front. The next part of the project I am working on is to make the custom bracket to connect/mount the DC motor to the engine mount carrier.

To make the custom bracket I need to know the exact forward/backward and lateral position of the drive train. Note I don't have the engine there so don't know exactly where the TX should be sitting (the Tx mounts allow for small movement as per design).

I have taken pictures of the TX and TX mounts and the hub from below. Here are some questions:
  • Do the Tx mounting brackets (hydraulic triangular ones) need to be exactly perpedicular to the Tx surface exactly behind the rotating parts to the which the hubs attach?
  • Do the same need to be perpendicular to the surface of the solid brackets i.e. side sections - to which the mounts are fixed?
  • Would anyone have or can take a pic from the bottom from approx the same position so I can eyeball it?
  • Is there another way to ascertain the 3 dimensional position of the TX where it needs to be?
  • Would someone tell me the distance between the bottom part of the TX flange and the cross member (not yet fitted in the pics). I could fit the cross member and establish vertical height from that..
  • Does the center of TX need to align with the center of the engine mount? I would assume so, just confirming...

I just need to get a approx way of knowing if my TX is in proper position as the tock TX needs to be.

Appreciate any help.

Also a lot of people have asked me for updates on how my project is going. I need to get to updating my thread to keep you guys updated. I promise I will start updating that thread...:-)

Cheers.




Attached Images
 

Last edited by PorscheFan5; 10-07-2015 at 11:54 AM.
PorscheFan5 is offline   Reply With Quote
Old 10-07-2015, 02:01 PM   #2
Registered User
 
Join Date: Mar 2015
Location: Santa Clara ca
Posts: 363
looks good, top of bellhousing about 1" below/ from sheetmetal above.
check at tx mounts from below and make sure they look centered, circle inside circle.
center front mount in slots, to maximize adjustment in the future...

i was going to make a new sleeve to accept the OEM rubber front mount (circular tube) and ditch the alum mounting plate, (watch out it is not actually symmetrical, if mounted right and not cracked (in the rubber))..

good luck, my subie swap is driving (just).
Sassmatt72 is offline   Reply With Quote
Old 10-07-2015, 03:03 PM   #3
Registered User
 
Join Date: Jan 2015
Location: WA
Posts: 5
I looked a bit under your profile, but could you point me to your build thread?

Very interested in this conversion if my engine ever blows.
huskyrunnr is offline   Reply With Quote
Old 10-07-2015, 07:54 PM   #4
Registered User
 
Join Date: Dec 2014
Location: California
Posts: 244
Thanks Sassmatt, I will check those out. Could you check if the TX hydraulic mounts (black brackets) are exactly perpendicular to the side sections? Also how high is the bottom of the Bellhousing from the cross member?

Huskyrunnr, I have not started putting up info on my build thread. Sorry.will start soon.
PorscheFan5 is offline   Reply With Quote
Old 10-08-2015, 09:24 AM   #5
Registered User
 
epapp's Avatar
 
Join Date: Aug 2013
Location: Bay Area
Posts: 700
Garage
Where will you put the batteries???
epapp is offline   Reply With Quote
Old 10-08-2015, 09:58 AM   #6
Registered User
 
Join Date: Dec 2014
Location: California
Posts: 244
epapp,

At this time my plan is to put batteries in three places.

-- 9 in the front where the gas tank was. See attached pic of the battery box that is almost ready
-- 18 each on both sides of the DC motor in the engine bay. I have to make the battery boxes once I have the drive train position locked.

Am going to use 45 of the 180 AH CALB batteries in series making it a 144V 180AH pack. Total 25.9 KWH and considering a 500A load from my 900A controller and 144V this would make a median calculation of 72KW system. I will be happy if I can get a 80 miles range...for my daily driver. Will perhaps get more.

Now back to the measurements. Need some help here, if people who have access to an open Boxster can make some measurements/pics for me, it will be great...
Attached Images
 

Last edited by PorscheFan5; 10-08-2015 at 10:43 AM.
PorscheFan5 is offline   Reply With Quote
Old 10-08-2015, 01:06 PM   #7
Registered User
 
itsnotanova's Avatar
 
Join Date: Jul 2013
Location: Bastrop, Tx
Posts: 2,367
Call me this weekend. I have a 2003 base on the lift and can try and take pics/measure for you.
__________________
Woody
itsnotanova is offline   Reply With Quote
Old 10-08-2015, 01:45 PM   #8
Registered User
 
Join Date: Dec 2014
Location: California
Posts: 244
Cool. Will do. ANy specific time works/or doesn't work? I am in PDT.

Thanks Woody!
PorscheFan5 is offline   Reply With Quote
Old 10-08-2015, 01:48 PM   #9
On the slippery slope
 
JayG's Avatar
 
Join Date: Mar 2014
Location: San Diego
Posts: 3,429
Garage
where in CA are you? I would love to see what you are doing
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region, 2014 Porsche Performance Driving School
2013 C300, 2010 Jetta 2011 Mazda 3, 1998 Windstar - Dog van , 2004 F-150 "Big Red"
JayG is offline   Reply With Quote
Old 10-08-2015, 02:18 PM   #10
Registered User
 
Join Date: Mar 2015
Location: Santa Clara ca
Posts: 363
Mine has the subaru EJ2.5 4cyl transplanted into it.
So, I don't think I can really give you those measurements as my sus cross member is tube steel tied to the old front motor mount location for a motor cradle.
-I'm not sure I'm perfectly back to a "stock" orientation, so Tx mount perpendicularity is unknown...

lmao. but it drives.

bellhousing to cross is about 1.25"? but check w a stock one, that is from my development notes on positioning.
Sassmatt72 is offline   Reply With Quote
Old 10-10-2015, 07:42 AM   #11
Registered User
 
Join Date: Dec 2014
Location: California
Posts: 244
JayG,

I am in the San Francisco Bay area in Northern California. Sure, let me know when you are in this corner of the woods...:-)
PorscheFan5 is offline   Reply With Quote
Old 10-10-2015, 07:43 AM   #12
Registered User
 
Join Date: Dec 2014
Location: California
Posts: 244
Woody,

Sent you a doc in email with the pics of the measurements I need. Tried calling you...

Let me know what time works for you.

Thanks again!

Last edited by PorscheFan5; 10-11-2015 at 07:15 PM.
PorscheFan5 is offline   Reply With Quote
Old 10-11-2015, 07:17 PM   #13
Registered User
 
Join Date: Dec 2014
Location: California
Posts: 244
Thanks for your help Woody! Very kind of you.

Keep an eye out for black driver side mat...

PorscheFan5 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 05:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page