Could someone take me to school on the merits of a bolt-on vs welding 914/6 engne mount? |
|
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. |
|
Could someone take me to school on the merits of a bolt-on vs welding 914/6 engne mount? |
Tdskip |
Feb 12 2018, 08:11 AM
Post
#1
|
Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Good morning - just doing some planning here but it looks (to my undereducated eyes anyway) that the weld-in and bolt-in mounts are similar. Do people use the Patrick Motorsports one simply to avoid welding?
It looks like a bolt-in one would need holes drilled in the firewall to mount it? Thanks in advance for the schooling. |
mepstein |
Feb 12 2018, 08:23 AM
Post
#2
|
914-6 GT in waiting Group: Members Posts: 19,142 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
Good morning - just doing some planning here but it looks (to my undereducated eyes anyway) that the weld-in and bolt-in mounts are similar. Do people use the Patrick Motorsports one simply to avoid welding? It looks like a bolt-in one would need holes drilled in the firewall to mount it? Thanks in advance for the schooling. Usually the bolts are there to place the mount until its welded. The PMS firewall mount gets welded. |
worn |
Feb 12 2018, 08:26 AM
Post
#3
|
can't remember Group: Members Posts: 3,129 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest |
Good morning - just doing some planning here but it looks (to my undereducated eyes anyway) that the weld-in and bolt-in mounts are similar. Do people use the Patrick Motorsports one simply to avoid welding? It looks like a bolt-in one would need holes drilled in the firewall to mount it? Thanks in advance for the schooling. I think it is really a matter of preference and situation. Welding will require some repainting, so is an excellent choice for a car that is going through a lot of rustoration. I would imagine some feel that a weld on is more reliable, but I doubt that if a mount fails it is due to the bolts. |
Tdskip |
Feb 12 2018, 08:26 AM
Post
#4
|
Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Good morning - so when Patrick Motorsports says bolt-in what they are really saying is;
offer the mount up mark the bold holes drill the bolt holes mount it then weld it Like that? |
mepstein |
Feb 12 2018, 08:33 AM
Post
#5
|
914-6 GT in waiting Group: Members Posts: 19,142 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
Good morning - so when Patrick Motorsports says bolt-in what they are really saying is; offer the mount up mark the bold holes drill the bolt holes mount it then weld it Like that? My mistake. I looked at their site and they do have a bolt in firewall mount. Personally, I would weld in and be done but it's your choice. Naro914/Bob Saville's is $100 cheaper and as nice or better. |
Steve |
Feb 12 2018, 08:37 AM
Post
#6
|
914 Guru Group: Members Posts: 5,548 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
Correct. All the mounts are welded in, but the cross bar motor mount that uses the stock 914-4 early motor mounts. Also known as the “quick six”
MSDS used to make the quick six mount. I ran it for over 10 years with no problems. The quick six only works with headers. I switched to the Rich Johnson mount when I switched to heat exchangers. The firewall mount moves the weight forward compared to the quick six for better overall weight distribution |
Tdskip |
Feb 12 2018, 08:39 AM
Post
#7
|
Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
My mistake. I looked at their site and they do have a bolt in firewall mount. Personally, I would weld in and be done but it's your choice. Naro914/Bob Saville's is $100 cheaper and as nice or better. Ah, got it. I am obviously a newbie here but I would tend to agree, once it's located it's very little additional work to seam weld it in place and the additional strength would seem to be a good thing. Thank you for the suggestion on the other options |
Steve |
Feb 12 2018, 08:39 AM
Post
#8
|
914 Guru Group: Members Posts: 5,548 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
Good morning - so when Patrick Motorsports says bolt-in what they are really saying is; offer the mount up mark the bold holes drill the bolt holes mount it then weld it Like that? My mistake. I looked at their site and they do have a bolt in firewall mount. Personally, I would weld in and be done but it's your choice. Naro914/Bob Saville's is $100 cheaper and as nice or better. Interesting.. I am not familiar with that one. |
Tdskip |
Feb 12 2018, 08:40 AM
Post
#9
|
Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Correct. All the mounts are welded in, but the cross bar motor mount that uses the stock 914-4 early motor mounts. Also known as the “quick six” MSDS used to make the quick six mount. I ran it for over 10 years with no problems. The quick six only works with headers. I switched to the Rich Johnson mount when I switched to heat exchangers. The firewall mount moves the weight forward compared to the quick six for better overall weight distribution Thank you Steve, appreciate the additional information. |
jd74914 |
Feb 12 2018, 08:43 AM
Post
#10
|
Its alive Group: Members Posts: 4,772 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
My mistake. I looked at their site and they do have a bolt in firewall mount. Personally, I would weld in and be done but it's your choice. Naro914/Bob Saville's is $100 cheaper and as nice or better. Interesting.. I am not familiar with that one. It's this one: http://www.914world.com/bbs2/index.php?showtopic=324206 Looks quite nice, especially considering the better price. |
JOEPROPER |
Feb 12 2018, 08:59 AM
Post
#11
|
The answer is "no" unless you ask... Group: Members Posts: 1,184 Joined: 21-November 15 From: White Plains New York Member No.: 19,387 Region Association: North East States |
My mistake. I looked at their site and they do have a bolt in firewall mount. Personally, I would weld in and be done but it's your choice. Naro914/Bob Saville's is $100 cheaper and as nice or better. Interesting.. I am not familiar with that one. It's this one: http://www.914world.com/bbs2/index.php?showtopic=324206 Looks quite nice, especially considering the better price. This is the one I got. There was a GB not long ago. I haven't installed it yet, but looks to be great quality. Little less expensive than others that I've seen which is always a plus when heading into this type of project. |
Cairo94507 |
Feb 12 2018, 09:01 AM
Post
#12
|
Michael Group: Members Posts: 9,650 Joined: 1-November 08 From: Auburn, CA Member No.: 9,712 Region Association: Northern California |
I think Naro914 has a great mount. For me, if you have decided to go with a 6, weld the mount in and be done with it. There are a couple nice mounts out there. Take the time to research them and select the one that best fits your application.
|
patssle |
Feb 12 2018, 09:11 AM
Post
#13
|
Senior Member Group: Members Posts: 981 Joined: 28-August 09 From: Houston, TX Member No.: 10,741 Region Association: None |
Uhhhh - the PMS bolt in mount does NOT need to be welded. It's bolt in. They make 2 versions...one is welded and the other is bolt in.
The PMS (I have) or Naro one are very nice as the entire engine/transmission can pivoted down without removing them from of the car. Definitely has some benefits there! |
sithot |
Feb 12 2018, 09:19 AM
Post
#14
|
Member Group: Members Posts: 446 Joined: 25-October 06 From: Virginia Member No.: 7,090 Region Association: None |
|
GeorgeRud |
Feb 12 2018, 09:28 AM
Post
#15
|
Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
I believe that mb911 (Ben) is working on replicating the factory mount, though I don’t know how far along that project is currently. I have the Rich Johnson mount in my conversion but do like the concept of the ‘swingdown’ mounts.
|
JmuRiz |
Feb 12 2018, 09:32 AM
Post
#16
|
914 Guru Group: Members Posts: 5,414 Joined: 30-December 02 From: NoVA Member No.: 50 Region Association: MidAtlantic Region |
It just is (IMG:style_emoticons/default/biggrin.gif) It's basically like an improved PMS mount, notice the fully boxed/braced ends where the engine mount 'tube' ties in.
Little items like that, as well as the $ savings adds up to a better value. If I didn't already have an older style Johnson mount, I would have gone this route. |
mepstein |
Feb 12 2018, 09:33 AM
Post
#17
|
914-6 GT in waiting Group: Members Posts: 19,142 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
I believe that mb911 (Ben) is working on replicating the factory mount, though I don’t know how far along that project is currently. I have the Rich Johnson mount in my conversion but do like the concept of the ‘swingdown’ mounts. Ben's is more of a special order item if you want a bulkhead mount similar to factory. I have one of the Naro mounts on a car and I purchased a 2nd for the next build. |
Larmo63 |
Feb 12 2018, 03:33 PM
Post
#18
|
Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
I used the Patrick Motorsports weld in mount. I pre mounted it with a big f---king nut and bolt at it's weld in location, then welded it. You can't see the BF bolt head in this shot, but it is what is holding it to the lower firewall. After welding, I just left them in for insurance.
Suspenders AND a belt. |
billh1963 |
Feb 12 2018, 07:49 PM
Post
#19
|
Car Hoarder! Group: Members Posts: 3,402 Joined: 28-March 11 From: South Carolina Member No.: 12,871 Region Association: South East States |
Good morning - so when Patrick Motorsports says bolt-in what they are really saying is; offer the mount up mark the bold holes drill the bolt holes mount it then weld it Like that? My mistake. I looked at their site and they do have a bolt in firewall mount. Personally, I would weld in and be done but it's your choice. Naro914/Bob Saville's is $100 cheaper and as nice or better. I have one of Bob's mounts on my '72 supporting a 2.7L six. Works very well |
Tdskip |
Feb 12 2018, 08:19 PM
Post
#20
|
Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
I used the Patrick Motorsports weld in mount. I pre mounted it with a big f---king nut and bolt at it's weld in location, then welded it. You can't see the BF bolt head in this shot, but it is what is holding it to the lower firewall. After welding, I just left them in for insurance. Suspenders AND a belt. Thank you for the picture. Did you drill through the firewall so you could mount the assembly and hold it in place prior to welding? |
Lo-Fi Version | Time is now: 29th March 2024 - 02:59 AM |
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 ... |