Bosch sparkplugs in a 914/6GT |
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Bosch sparkplugs in a 914/6GT |
tomburdge |
Aug 9 2006, 01:28 PM
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#1
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Newbie Group: Members Posts: 33 Joined: 11-August 05 From: Hillsborough,N.J. Member No.: 4,576 |
I removed the plugs out of my GT (yes I am the proud owner of a real factory built one) and found Bosch plugs designated XR4CS. These are a strange breed to me.I think they are copper,resistor type,and fairly cold.But why the "X".Could it be because its twin plug, the projection into the combustion chamber must be limited or of special design?
If anyone has anyknowledge or thoughts please let me know.I'm not even sure if you can buy these anymore.Can anyone cross reference these over to another brand? BTW for those of you who knew Gary Wigglesworth,I'm the guy who bought his GT.As most of you probably know by now,Gary passed away in February. I've vowed to remain a good steward of this piece of racing history for all to enjoy. You can see the car at the "Zippo" at the Glen in September.If you attend please stop by and say hello. Thanks Tom B. |
Bleyseng |
Aug 9 2006, 02:03 PM
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#2
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
"Two choices available the standard X5DC replacement plug and a one step colder XR4CS plug. XR4CS recommended for track use or high output motors." from www.bimmerworld.com/html/bosch-spark-plugs.htm
www.rockauto.com has them listed. |
ChicagoPete |
Aug 10 2006, 10:47 AM
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#3
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Member Group: Members Posts: 227 Joined: 10-January 05 From: Lake Forest,IL Member No.: 3,427 |
Hi Tom, Nice to see you on the board. Sorry I cannot help with your problem...but, was thinking that if you had any recent photos of your car you should email them off to Armando. Glad to know that another of these rare beauties is staying on the track.
Do you have any idea of what has become of Translog? I know that Gary also owned another 914/6 and a completely original dealer kit to build your own GT. At the time he was selling your car he was also offering the other one. |
tomburdge |
Aug 10 2006, 05:30 PM
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#4
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Newbie Group: Members Posts: 33 Joined: 11-August 05 From: Hillsborough,N.J. Member No.: 4,576 |
Hi Chicagopete,Thanks for responding. Translog still exists and is being managed by a fella named Tony ? who was Garys right hand man.I think the business still belongs to the family.Armando does have pictures of my car on his site,but I should send him some of the historical ones I have gathered.I am trying my best to ensure the car remains as original as possible.She is not perfect ,but thats OK with me because I don't think a race car should look like a garage queen.It should look as it did when it was raced.Some people would disagree but thats OK.
I've had her out at several events,albeit very carefully.No need to drive 10/10ths and but the car at risk. Thanks again for your interest. Tom B. |
Jeroen |
Aug 10 2006, 05:40 PM
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#5
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914 Guru Group: Members Posts: 7,887 Joined: 24-December 02 From: The Netherlands Member No.: 3 Region Association: Europe |
can you post some pics of your car here
(or post a link to the pics of your car on Armando's site) |
Eddie914 |
Aug 10 2006, 06:48 PM
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#6
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Unregistered |
Bosch X5DC?
My other 6 cylinder German car (1988 BMW M5) uses the X5DC. Interesting spark plug. X = M12x1.25 with 17.5mm (11/16") hex head 5 = Heat range D = 19mm reach C = Copper Try to find an 11/16" spark plug socket at your local FLAPS ... or for that matter the X5DC. Eddie |
Eric_Shea |
Aug 10 2006, 07:20 PM
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#7
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PMB Performance Group: Admin Posts: 19,275 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
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Flat VW |
Aug 10 2006, 07:42 PM
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#8
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Illegal Soapbox Derby Racecar Group: Members Posts: 1,692 Joined: 13-November 04 From: Phoenix, AZ Member No.: 3,105 |
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Gustl |
Aug 10 2006, 10:39 PM
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#9
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914 enthusiast & historian Group: Members Posts: 11,505 Joined: 16-June 04 From: TIROL / Austria Member No.: 2,212 Region Association: Austria |
can you post some pics of your car here (or post a link to the pics of your car on Armando's site) well, that's easy ... I thought an Admin could post a link (IMG:style_emoticons/default/idea.gif) (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/laugh.gif) (IMG:style_emoticons/default/av-943.gif) (sorry Jeroen) The Daytona Winning Porsche 914-6 GT (IMG:style_emoticons/default/wavey.gif) Gustl |
TimT |
Aug 10 2006, 11:06 PM
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#10
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
Tom welcome to the club,
that sounds like a lower plug correct? Look in this spreadsheet.. search for X5DC... few if any subsitutes Ill have to look in the shop but we have a car that uses 12mm lower plugs. We now advise all customers that want to twin plug to have the heads machined for 14 mm plugs.. we currently use NGK R5671A-8 as lower plugs |
ChicagoPete |
Aug 11 2006, 07:19 PM
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#11
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Member Group: Members Posts: 227 Joined: 10-January 05 From: Lake Forest,IL Member No.: 3,427 |
Tom welcome to the club, that sounds like a lower plug correct? Look in this spreadsheet.. search for X5DC... few if any subsitutes Ill have to look in the shop but we have a car that uses 12mm lower plugs. We now advise all customers that want to twin plug to have the heads machined for 14 mm plugs.. we currently use NGK R5671A-8 as lower plugs TimT...you are advising using 14mm lower plugs, but, don't you find you have clearance problems with the bigger plugs during removal and replacement? Peter |
TimT |
Aug 11 2006, 07:51 PM
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#12
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
QUOTE you are advising using 14mm lower plugs, but, don't you find you have clearance problems with the bigger plugs during removal and replacement? The NGK plugs we use are 14mm thread, with 5/8 hex so there are no clearance problems. If you were to use a full sized plug 14mm with 13/16 hex you can run into clearance problems with the head nuts and socket. We found its much easier to source 14mm peanut plugs that work, than to sesarch around for rare 12mm plugs |
Jake Raby |
Aug 11 2006, 08:51 PM
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#13
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Nice to see you here, Tom!
Tom has another 914- MassIVe powreed 914-4 that competes in F production in the northeast... |
sixnotfour |
Aug 11 2006, 09:20 PM
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#14
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914 Wizard Group: Members Posts: 10,432 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
12mm both holes , factory race head, would be interesting to know what you got there.
Gary Wigglesworth RIP, the pano article about buying the burned race car a classic. |
tomburdge |
Aug 13 2006, 01:44 PM
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#15
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Newbie Group: Members Posts: 33 Joined: 11-August 05 From: Hillsborough,N.J. Member No.: 4,576 |
Thanks everyone for the "welcome aboard" plus your interest in my 'GT".
For those of you interested I will try to post some pic's of the GT both current and historic.Give me some time though as I am not very computer savy.I guess my "cut and paste" skills are no longer applicable in todays world. Again the GT will be at the "Zippio"at the Glen and also at the PCA race in Daytona come Oct.Hope to see you there.. Tom B. |
So.Cal.914 |
Aug 13 2006, 02:51 PM
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#16
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"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
Congrat's on the car and welcome.
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tomburdge |
Aug 17 2006, 08:15 AM
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#17
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Newbie Group: Members Posts: 33 Joined: 11-August 05 From: Hillsborough,N.J. Member No.: 4,576 |
12mm both holes , factory race head, would be interesting to know what you got there. Gary Wigglesworth RIP, the pano article about buying the burned race car a classic. What I have here is Carrera 6 motor used in the GT's. Twin plug, solid lifter puttung out 220hp at 8000 rpm. |
ptravnic |
Aug 17 2006, 08:30 AM
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#18
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Senior Member Group: Members Posts: 1,231 Joined: 27-May 03 From: Chicago, IL Member No.: 747 Region Association: None |
Good to see another Metro NY on the board. We have gained some momentum in the past 6 months or so. A few of us are even getting together the 26th to swap the heads on my 2056cc at a shop in Lyndhurst.
Take a look @ this thread for more background: http://www.914world.com/bbs2/index.php?showtopic=57889 And, (IMG:style_emoticons/default/welcome.png) -pt |
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