2056 build advice requested from those that have been there, June 23 update: original heads rebuilt and will be reinstalled with 96's, will save up for the full upgraded LN |
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2056 build advice requested from those that have been there, June 23 update: original heads rebuilt and will be reinstalled with 96's, will save up for the full upgraded LN |
JeffBowlsby |
Jun 11 2021, 06:00 PM
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#21
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914 Wiring Harnesses Group: Members Posts: 8,533 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
See what a slippery slope this can be? Not mentioned upgraded brakes, suspension or the host of other possible upgrades to consider.
Why the proverbial mountain out of a molehill, just repair the head and drive/maintain it as it was originally. |
930cabman |
Jun 11 2021, 06:33 PM
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#22
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Advanced Member Group: Members Posts: 3,144 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States |
Me too. Thanks everyone for the input, I may going this route at some point soon. I don't see much with regards to larger displacement (thin bearing surfaces I suspect) or compression (same reason) If 2056 is the number so be it |
Mark Henry |
Jun 12 2021, 03:27 AM
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#23
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Me too. Thanks everyone for the input, I may going this route at some point soon. I don't see much with regards to larger displacement (thin bearing surfaces I suspect) or compression (same reason) If 2056 is the number so be it The only way bigger is a stroked crank, rods, nickies for bigger pistons, etc. Jeff's right it's a slippery slope, bigger cam add $1k to the valve train and headwork and so on.... |
adolimpio |
Jun 12 2021, 04:47 AM
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#24
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Art Group: Members Posts: 182 Joined: 10-March 10 From: Greenwood SC Member No.: 11,449 Region Association: South East States |
If you want to get back on the road quick and cheap, and then plan for a more thorough build, I have a pair of freshly rebuilt heads that I bought from Mark Epstein about 2 years ago. I chose to go another direction with my build so I never used them.
One note is that one of the plug ports has a time-sert in it. I'd like to get what I paid, which was $750. If you're interested I will send pictures. |
DRPHIL914 |
Jun 23 2021, 06:23 AM
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#25
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Dr. Phil Group: Members Posts: 5,768 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States |
If you want to get back on the road quick and cheap, and then plan for a more thorough build, I have a pair of freshly rebuilt heads that I bought from Mark Epstein about 2 years ago. I chose to go another direction with my build so I never used them. One note is that one of the plug ports has a time-sert in it. I'd like to get what I paid, which was $750. If you're interested I will send pictures. (IMG:style_emoticons/default/icon_bump.gif) so just updating this , ive not been on much due to being gone for a week for our daughters wedding and vacation. While i was gone i did decide to send out the heads to Eagle Automotive Machine in Atlanta. They do rebuilds on all air cooled motors, and i was referred to them by local shop. Turns out my heads are in excellent condition, better they said than most 2.0 that they get in there, and the seats will be done, new exhaust guides etc. he said they look like new and will be finished up this week and sent back to me, i should have them in next week. I am considering doing new P&C's since the heads are off anyway. @abolimpio , thanks for the offer, looks like i will be reinstalling mine. since the heads dont need to be milled etc, no fly-cut needed he said, i should be able to re-install with same push rods etc right? Any other advice before getting to that point. - oh and i need one new case stud as one of them came out with the nut on it and they had to cut it , can i get just one? anyone have one? i dont want to remove the ones that stayed in i hate to buy a whole set just to get one, other question is about spacers/gaskets/shims for between the head and cylinder. Phil |
mepstein |
Jun 23 2021, 08:22 AM
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#26
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914-6 GT in waiting Group: Members Posts: 19,313 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
I would keep the same p&c’s if they are good. Minimize the changes to the engine and get back on the road. The increased displacement makes very little difference.
I have a handful of case studs that I removed from a case to make shipping easier. I remember them to be in very good condition. PM or email me your address and I’ll ship them to you. (IMG:style_emoticons/default/beerchug.gif) |
mepstein |
Jun 23 2021, 08:25 AM
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#27
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914-6 GT in waiting Group: Members Posts: 19,313 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
If you want to get back on the road quick and cheap, and then plan for a more thorough build, I have a pair of freshly rebuilt heads that I bought from Mark Epstein about 2 years ago. I chose to go another direction with my build so I never used them. One note is that one of the plug ports has a time-sert in it. I'd like to get what I paid, which was $750. If you're interested I will send pictures. Those heads, crank etc where really nice. I bet you can sell easily if you want. |
rfinegan |
Jun 23 2021, 08:38 AM
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#28
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Senior Member Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region |
Sounds like you will be back on the road in no time.
With the original cam and valve train I do not see any reason the Stock pushrods can not be reused. Even with a 96 mm big bore kit. Check the deck height for your desired compression and spot check the valve geometry. If all looks good set the valve lash as usual and install and drive Most will tell you NO head gaskets are needed. But this can change the compression ration calculations. Most of the time it just adds a little bump up, and that is not a bad thing in my opinion |
DRPHIL914 |
Jun 23 2021, 09:09 AM
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#29
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Dr. Phil Group: Members Posts: 5,768 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States |
I would keep the same p&c’s if they are good. Minimize the changes to the engine and get back on the road. The increased displacement makes very little difference. I have a handful of case studs that I removed from a case to make shipping easier. I remember them to be in very good condition. PM or email me your address and I’ll ship them to you. (IMG:style_emoticons/default/beerchug.gif) that would be great! |
Bleyseng |
Jun 23 2021, 09:22 AM
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#30
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Don't use gaskets between the heads and cylinders per the VW bulletin. Shim underneath the cylinders to get the right Deck Height.
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Mark Henry |
Jun 23 2021, 12:25 PM
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#31
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
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Mark Henry |
Jun 23 2021, 12:25 PM
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#32
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
dp
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mepstein |
Jun 23 2021, 12:53 PM
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#33
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914-6 GT in waiting Group: Members Posts: 19,313 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
Don't use gaskets between the heads and cylinders per the VW bulletin. Shim underneath the cylinders to get the right Deck Height. Do the math! CB performance and others have an engine calculator. Mark Henry - Pertinent question to this thread. I’m guessing the switch from 94mm p&c’s to 96’s only adds about 5hp. Your thoughts? |
Mark Henry |
Jun 23 2021, 12:54 PM
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#34
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Maybe, but I doubt if half that much.
HP increases are the sum of the parts. On the 996/7 engines I build up from 3.6 to 4.0 I'd be surprised if it's much over 20 extra HP. |
Mark Henry |
Jun 23 2021, 01:14 PM
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#35
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
BTW AA only just shipped my skid of parts including several sets of 914 2.0 heads, both AMC and AA flavors, on Monday, (IMG:style_emoticons/default/rolleyes.gif)
But at least they are on the way finally. (IMG:style_emoticons/default/chowtime.gif) |
mepstein |
Jun 23 2021, 01:21 PM
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#36
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914-6 GT in waiting Group: Members Posts: 19,313 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
Maybe, but I doubt if half that much. HP increases are the sum of the parts. On the 996/7 engines I build up from 3.6 to 4.0 I'd be surprised if it's much over 20 extra HP. That’s what I thought but wanted to confirm with a real engine builder. (IMG:style_emoticons/default/beerchug.gif) |
DRPHIL914 |
Jun 23 2021, 02:24 PM
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#37
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Dr. Phil Group: Members Posts: 5,768 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States |
Maybe, but I doubt if half that much. HP increases are the sum of the parts. On the 996/7 engines I build up from 3.6 to 4.0 I'd be surprised if it's much over 20 extra HP. That’s what I thought but wanted to confirm with a real engine builder. (IMG:style_emoticons/default/beerchug.gif) so probably for this refresh staying stock, wondering if i should at least put new rings on? compression before this was 135,135, 125 130 i think. then it went to 0 with that open valve due to seat being loose but , new rings a good idea? |
DRPHIL914 |
Jun 23 2021, 02:40 PM
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#38
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Dr. Phil Group: Members Posts: 5,768 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States |
Don't use gaskets between the heads and cylinders per the VW bulletin. Shim underneath the cylinders to get the right Deck Height. Do the math! CB performance and others have an engine calculator. i saw that posted somewhere and read about doing that , if needed, under the cylinder not between the cylinder and head- these heads did have shim between cylinder and head and i didn’t measure them as they were stuck on the heads, and i don’t think they eagle machine did either, but they are gone now, he said the heads are clean, good shape, didn’t need to be fly cut- so does that mean clean ans level surface ? when you say measure o assume you mean deck height, and checking for clearance - so once heads are back, mount them up and make sure valves are not interfering with piston when at TDC. if i had the known thickness of those gaskets i’d have a better idea about what we need to be replacing. wonder what the history is ans why they did that years ago. car only ha 60k miles on it now, about 38k or so when i bought it 12 years ago and previous records which there is a stack of don’t show any motor work, but there is about a 20 year span of almost nothing. so could be someone at some time did an upper end refresh? did they use gaskets there when new bacon in 1975 ? did that bulletin came out much later ? |
mepstein |
Jun 23 2021, 04:47 PM
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#39
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914-6 GT in waiting Group: Members Posts: 19,313 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
Porsche moved from head gaskets 3.0 to base shims on the 3.2 but I have no idea what they do now or what the early engines had. Yes wouldn’t be surprised if they went back and forth a couple times in their history.
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Mark Henry |
Jun 24 2021, 05:26 AM
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#40
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Porsche moved from head gaskets 3.0 to base shims on the 3.2 but I have no idea what they do now or what the early engines had. Yes wouldn’t be surprised if they went back and forth a couple times in their history. No, the /6 has always used base shims to adjust CR, this style of head gasket (different from VW) dosen't effect deck height. |
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