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Search took 0.01 seconds. Search: Posts Made By: Herb_911_76

Forum: 911 Engine Rebuilding Forum

03-22-2025, 03:39 PM

Replies: 183

2.7 Rebuild – To bore or not to bore and other questions

Views: 22,348

Posted By Herb_911_76

Draw, thanks for your detailed report, very...

Draw, thanks for your detailed report, very informative as I'm also working on a 2.7. FYI: Previous owner had Dilavar studs on exhaust side. All but 3 Dilavars had snapped while all steelies on the...

Forum: Porsche 911 Technical Forum

07-11-2021, 04:24 AM

Replies: 12

76 exhaust valve seal replacement, spring compression issue

Views: 774

Posted By Herb_911_76

Thanks Tony, your pics confirm that one has...

Thanks Tony,

your pics confirm that one has to work on lining everything up. I still think that something was (is) wrong with my compression tool. I have tried a variation of washers, just like in...

Forum: Porsche 911 Technical Forum

07-10-2021, 07:05 PM

Replies: 5

1975 CIS surging/bucking

Views: 578

Posted By Herb_911_76

Make sure the filter box is not cracked. Engine...

Make sure the filter box is not cracked. Engine hesitated, sputtered between 2 and 3 k on acceleration. I could never tune it for all ranges/all temperatures. Eventually found cracked filter box.

Forum: Porsche 911 Technical Forum

07-10-2021, 06:11 PM

Replies: 12

76 exhaust valve seal replacement, spring compression issue

Views: 774

Posted By Herb_911_76

Thanks, Nomore. I guess that was my point, the...

Thanks, Nomore. I guess that was my point, the tool is not aligned in itself when the business end is in line with valve stem and sits squarely on the retainer disc. Of course tried other studs, but...

Forum: Porsche 911 Technical Forum

07-10-2021, 12:52 PM

Replies: 12

76 exhaust valve seal replacement, spring compression issue

Views: 774

Posted By Herb_911_76

Tony, I had to take care of something else before...

Tony, I had to take care of something else before I could return to the car. Anyways, enclosed is a picture of the setup from which you can see that the tool is not perfectly aligned. The tool fork...

Forum: Porsche 911 Technical Forum

07-10-2021, 08:20 AM

Replies: 12

76 exhaust valve seal replacement, spring compression issue

Views: 774

Posted By Herb_911_76

Thanks John, I do have P7E. P7E is stamped right...

Thanks John, I do have P7E. P7E is stamped right into the side of the arm. I guess that leaves me with a mystery. I even ground off about 1/16 of the bottom of the tool (where it sits on the head) to...

Forum: Porsche 911 Technical Forum

07-10-2021, 07:26 AM

Replies: 12

76 exhaust valve seal replacement, spring compression issue

Views: 774

Posted By Herb_911_76

Hi Tony, thanks for your reply. I am using...

Hi Tony,

thanks for your reply. I am using a P7 tool and am now realizing there are intake and exhaust versions. I am not sure if I can distinguish between the two. Any way to tell the...

Forum: Porsche 911 Technical Forum

07-10-2021, 05:31 AM

Replies: 12

76 exhaust valve seal replacement, spring compression issue

Views: 774

Posted By Herb_911_76

76 exhaust valve seal replacement, spring compression issue

Can anybody please give me advise on how to replace a valve seal. I am at the point where I am trying to compress the valve spring enough to remove the keepers. (fed string through spark plug hole to...

Forum: 911 Engine Rebuilding Forum

01-01-2018, 07:56 AM

Replies: 9

Valve guide replacement

Views: 1,300

Posted By Herb_911_76

Gordon: Sorry if I wasn't clear, #911-103-949-01...

Gordon: Sorry if I wasn't clear, #911-103-949-01 contains six sets, but only one head stud was heli-coiled during the complete rebuild in 1992 (bearings and all).

Walt: Thanks for your input. I...

Forum: 911 Engine Rebuilding Forum

12-31-2017, 02:18 PM

Replies: 9

Valve guide replacement

Views: 1,300

Posted By Herb_911_76

I can't really tell if its using an undue amount...

I can't really tell if its using an undue amount of oil. I am also dealing with a cracked air box, so I didn't really get to drive enough lately. I am coming to grips that I have to drop the engine,...

Forum: 911 Engine Rebuilding Forum

12-31-2017, 05:57 AM

Replies: 9

Valve guide replacement

Views: 1,300

Posted By Herb_911_76

Thanks Gordon, it's a 76 Targa with a 2.7, German...

Thanks Gordon, it's a 76 Targa with a 2.7, German import. Was rebuilt including rings by previous owner mid 90's with all right bits as far as I can tell. I don't think there is more than 30k on the...

Forum: 911 Engine Rebuilding Forum

12-30-2017, 04:09 PM

Replies: 9

Valve guide replacement

Views: 1,300

Posted By Herb_911_76

Valve guide replacement

Hi, I dropped my heat exchangers to find a source for warm up smoke. It appears I might have a bade exhaust valve guide on cylinder 2. Oil/soot is building up in the exhaust port and appears to...

Forum: Porsche 911 Technical Forum

07-11-2017, 05:45 PM

Replies: 3

Oil in exhaust system

Views: 544

Posted By Herb_911_76

Thanks for your reply. Yeah definitely more than...

Thanks for your reply. Yeah definitely more than a couple of quarts, it kept on coming after I cracked the valve cover. Eventually I opened the drain plug on the aux tank and only maybe half a quart...

Forum: Porsche 911 Technical Forum

07-10-2017, 08:00 PM

Replies: 3

Oil in exhaust system

Views: 544

Posted By Herb_911_76

Oil in exhaust system

An insane amount of smoke at start up led me discover that oil was collecting in the exhaust part of the left bank heat exchanger. I guess it burns off eventually, because the smoking subsides after...

Forum: Porsche 911 Technical Forum

07-10-2017, 06:40 PM

Replies: 4

Delayed Acceleration

Views: 553

Posted By Herb_911_76

I just went through days of troubleshooting these...

I just went through days of troubleshooting these symptoms: hesitation to about 2,600, good pull afterwards. After CIS adjustment, it would run better at lower rpm, but misfire at higher rpm. After a...

Forum: Porsche 911 Technical Forum

12-06-2014, 02:41 PM

Replies: 9

Atlas scissor-lift owners...

Views: 2,077

Posted By Herb_911_76

If your concrete floor doesn't give way under...

If your concrete floor doesn't give way under your tires, you should be OK. The specific loading (lbs/ sqin) from the jack posts is probably less from the tires due to the difference in patch size....

Forum: Porsche 911 Technical Forum

09-17-2014, 10:01 AM

Replies: 22

73 charging problem

Views: 4,843

Posted By Herb_911_76

Thanks for the input! @ 47 Silver: Went out...

Thanks for the input!
@ 47 Silver: Went out last night to check the voltage on the field connection at the VR (blue wire) and it read 14.3V, so I am pretty sure that the alternator is capable of...

Forum: Porsche 911 Technical Forum

09-16-2014, 11:31 AM

Replies: 22

73 charging problem

Views: 4,843

Posted By Herb_911_76

is my alternator on the fritz, too?

I realize this is an old post but I have a similar charging problems and my 76 Euro targa has the exact same SEV Marchel alternator.

Current symptoms: low charging voltage: 12.2V at 3000rpm,...

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