Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> Floorpan cross tube thingies, Best way to cut them out?
campbellcj
post Mar 28 2004, 10:26 PM
Post #1


I can't Re Member
****

Group: Members
Posts: 4,549
Joined: 26-December 02
From: Agoura, CA
Member No.: 21
Region Association: Southern California
I finally made some more progress on the car this weekend -- finished the engine compartment side of the fuel line and Weber fuel bar replacement, redid the rear f/g bumper mountings (dzus) and pulled the seat to begin a bunch of interior stuff.

To mount my new seats, I will need to channel or completely remove the box section that goes across the floor pans (i.e. approx. under your knees). The seats will be on alloy sidemounts that are bolted directly to the floor, which I'll reinforce a bit.

Question is, should I hunt down a plasma cutter or cutting torch (i.e. pay a shop) or can this be done decently with what I've got, i.e. just about anything else (cutoffs, grinders, drills, etc)??? (IMG:style_emoticons/default/confused24.gif) I don't want to butcher the floors as they're fairly clean and I don't have a welder, either. (IMG:style_emoticons/default/unsure.gif)

Thanks again 914 gurus! (IMG:style_emoticons/default/pray.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
 Reply to this topicStart new topic
Replies(1 - 14)
SirAndy
post Mar 28 2004, 10:41 PM
Post #2


Resident German
*************************

Group: Admin
Posts: 41,679
Joined: 21-January 03
From: Oakland, Kalifornia
Member No.: 179
Region Association: Northern California
plasma cutter is the easiest. just remember to angle it up a little bit, otherwise you'll torch through the floorpan. it also helps to have the tar removed prior (IMG:style_emoticons/default/wink.gif)

i supose a cutoffwhell would do the job too.
i'm not sure, is the crossbar spot-welded? if so, you could try to drill them out and remove it as a whole.

ADDED:
if you go with the plasma cutter cut about 5mm above the floorpan to avoid melting the floor.


Andy
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Mar 28 2004, 10:46 PM
Post #3


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
Chris,

Just notch them and fold them forward for your seat. Cutting it without a plasma or a cutoff wheel would be a ton of friggin work. You could drill out the spot welds... but you stand a chance of drilling through the floorpans..plus you would be there all week trying to drill them out while hanging from the cage.


B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
campbellcj
post Mar 28 2004, 11:10 PM
Post #4


I can't Re Member
****

Group: Members
Posts: 4,549
Joined: 26-December 02
From: Agoura, CA
Member No.: 21
Region Association: Southern California
Thanks guys...I was starting to think that just notching them would be the "way to go". They do appear to be spot welded but a LOT of spots! Plus I figure the remaining metal will add some degree of stiffness to the floors.

I'll try notching, folding forward and then cutting/grinding off the excess sheet metal.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Mar 28 2004, 11:14 PM
Post #5


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
If you dont fold them forward the seat bottom will sit on it before your holes line up for the bracket.


OH! OH! OH! DONT line the seat up straight with the steering wheel. The left seat bracket needs to be about 1/4 forward of the right seat bracket. If you dont... the high side bolster of you seat will have your right knee hyper extended trying to bend towards the gas pedal...so angle the seat a *little* towards the gas pedal. If you notice.. the steering wheel is not lined up straight with driver.. so the seat position works out perfect even at a slight angle.


B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
campbellcj
post Mar 28 2004, 11:40 PM
Post #6


I can't Re Member
****

Group: Members
Posts: 4,549
Joined: 26-December 02
From: Agoura, CA
Member No.: 21
Region Association: Southern California
I was actually looking at the angles (hanging upside down from the cage half the time) for quite a while this afternoon.

Is it fair to say that I want to stick with the lines of the stock seat mounts? They are clearly not "centered" with the steering wheel but they obviously work quite well in the real world.

Oh yeah, if nobody guessed yet, my "old school" Koenig race seats were on the stock rails. Time to get rid of that less-than-solid mounting setup, and the 45lb seats...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Mar 29 2004, 12:00 AM
Post #7


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
They work well because the stock seat has no side bolster to speak of. Just be careful. I know I cannot mount Momo's or Sparco's in line with the stock holes..and forget a Kirkey or something similar.



B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jeroen
post Mar 29 2004, 04:27 AM
Post #8


914 Guru
*****

Group: Members
Posts: 7,887
Joined: 24-December 02
From: The Netherlands
Member No.: 3
Region Association: Europe
Slightly related...

What's the best way to reinforce the floor without gaining too much height?

Anyone got any pics of the floor before the seats/side brackets are mounted?

cheers,

Jeroen
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
machina
post Mar 29 2004, 06:57 AM
Post #9


Advanced Member
****

Group: Benefactors
Posts: 2,030
Joined: 21-June 03
From: Miami Beach, FL
Member No.: 848
we made a pretty heavy duty bracket welded to the floor, at least .125" steel, maybe more. It is only about .25" off the floor at the rear and about 1" at the front to angle the seat back.

Also the frame is drilled out where the stock lap belt mounts are and the anti sub mount is welded to it at the center.

The frame needs to be extremely strong. It has to withstand a huge amount of force if and when you go off hard.

dr


Attached thumbnail(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Rusty
post Mar 29 2004, 08:52 AM
Post #10


Wanted: Engine case GA003709
*****

Group: Admin
Posts: 7,942
Joined: 24-December 02
From: North Alabama
Member No.: 6
Region Association: Galt's Gulch
Got pics of the old seats? Whatcha gonna do with them?

-Rusty (IMG:style_emoticons/default/smoke.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
machina
post Mar 29 2004, 09:12 AM
Post #11


Advanced Member
****

Group: Benefactors
Posts: 2,030
Joined: 21-June 03
From: Miami Beach, FL
Member No.: 848
they are sitting in my office.

someone on the board wants them but they are too expensive to ship.

any ideas?

dr
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
seanery
post Mar 29 2004, 09:22 AM
Post #12


waiting to rebuild whitey!
***************

Group: Retired Admin
Posts: 15,854
Joined: 7-January 03
From: Indy
Member No.: 100
Region Association: None
ship 'em Greyhound.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JWest
post Mar 29 2004, 09:25 AM
Post #13


Senior Member
***

Group: Members
Posts: 1,662
Joined: 6-January 03
From: Fort Worth, TX
Member No.: 97
Region Association: None
I concur - Greyhound.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jonwatts
post Mar 29 2004, 09:27 AM
Post #14


no rules, just wrong
****

Group: Benefactors
Posts: 2,321
Joined: 13-January 03
From: San Jose, CA
Member No.: 141
Yeah, that way they can charge passengers to sit in them (IMG:style_emoticons/default/laugh.gif)

But seriously, they would be perfect for this. Cheap and reliable.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jeroen
post Mar 29 2004, 03:41 PM
Post #15


914 Guru
*****

Group: Members
Posts: 7,887
Joined: 24-December 02
From: The Netherlands
Member No.: 3
Region Association: Europe
Thanks for posting the pics!

cheers,

Jeroen
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Switch to: Standard · Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 9th June 2024 - 02:08 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...