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Forum: Porsche 928 Technical Forum

03-08-2011, 02:38 AM

Replies: 13

mid engine m28 - engine electric

Views: 2,475

Posted By Roy928tt

Hi Tobias At least you have started with a...

Hi Tobias

At least you have started with a '79 which should have CIS and relatively simple wiring. I'm afraid I can't help you directly but the simple way is to strip out your existing loom it...

Forum: Porsche 928 Technical Forum

02-17-2011, 03:32 PM

Replies: 28

The Rebuild - Has Begun.

Views: 5,202

Posted By Roy928tt

Hey Gunar There is a ring gear that is...

Hey Gunar

There is a ring gear that is worn out !

A whole lot worse than your one and was still working.

Cheers Roy :)

Forum: Porsche 928 Technical Forum

01-01-2011, 11:13 AM

Replies: 658

First 928 -The story(nightmare?)begins

Views: 97,856

Posted By Roy928tt

Wow have you done a power of work on that car!...

Wow have you done a power of work on that car! congratulations it is looking fantastic. enjoy

Cheers Roy

Forum: Porsche 928 Technical Forum

12-26-2010, 08:45 PM

Replies: 83

79 928 backfired and stopped running

Views: 7,853

Posted By Roy928tt

Have a quick look at the insulation block between...

Have a quick look at the insulation block between the cold start injector and the plenum chamber after 30 years they deteriate and break up causing a lean mixture and poor starting.

Forum: Porsche 928 Technical Forum

11-09-2010, 03:22 PM

Replies: 22

M28/03 motor for sale

Views: 3,073

Posted By Roy928tt

I dunno about 100% worthless, with a couple of...

I dunno about 100% worthless, with a couple of turbos the low comp. 4.5 is as good as any engine!

Forum: Porsche 928 Technical Forum

11-06-2010, 04:15 PM

Replies: 12

82 5speed trans oil?

Views: 1,266

Posted By Roy928tt

75w-90 semi or synthetic, accept no substitute.

75w-90 semi or synthetic, accept no substitute.

Forum: Porsche 928 Technical Forum

10-31-2010, 05:58 PM

Replies: 37

more clutch help please (car in shop ) ....

Views: 2,335

Posted By Roy928tt

When I replaced the cylinders in my 928, I had a...

When I replaced the cylinders in my 928, I had a torrid time trying to bleed it, in the end the answer was to push the pushrod back into the slave cylinder, I seem to recall doing it with a pair of...

Forum: Porsche 928 Technical Forum

05-30-2010, 05:10 AM

Replies: 658

First 928 -The story(nightmare?)begins

Views: 97,856

Posted By Roy928tt

Leo I simply pointed out that Gunar will...

Leo

I simply pointed out that Gunar will have to decide from which information he will make his decisions, I suspect there are many on these forums who have no classical training and little...

Forum: Porsche 928 Technical Forum

05-28-2010, 04:45 PM

Replies: 658

First 928 -The story(nightmare?)begins

Views: 97,856

Posted By Roy928tt

With regards to a 928 clutch, I would not replace...

With regards to a 928 clutch, I would not replace anything untill it is completely screwed. It is the work of 1 1/2 hours to remove a clutch from a 928, you can do it yourself, and I'm sure you have...

Forum: Porsche 928 Technical Forum

05-28-2010, 01:12 AM

Replies: 658

First 928 -The story(nightmare?)begins

Views: 97,856

Posted By Roy928tt

Your clutch plate looks fine, just check both...

Your clutch plate looks fine, just check both bearings, thrust and pilot, ensure they run quiet and smooth, and put it all back together.

Gaskets are expensive, but after many years of exposure to...

Forum: Porsche 928 Technical Forum

03-25-2010, 08:39 PM

Replies: 46

best year 928 for moderately skilled mechanic

Views: 5,065

Posted By Roy928tt

I think the secret to maintaining a 928 is to not...

I think the secret to maintaining a 928 is to not be daunted by it, I think if you can carry this ethos into the job, you will soon discover that your confidence is boosted as you successfully...

Forum: Porsche 928 Technical Forum

03-12-2010, 10:53 AM

Replies: 9

Turbo'ing 928

Views: 1,108

Posted By Roy928tt

Yes it certainly could be done, and with a modern...

Yes it certainly could be done, and with a modern ball bearing turbo it would probably spin up quite early anyway. And then you would get a second kick as the 4.7 litre cams come to life.

I guess...

Forum: Porsche 928 Technical Forum

03-12-2010, 02:13 AM

Replies: 9

Turbo'ing 928

Views: 1,108

Posted By Roy928tt

Gee I Dunno. I reckon if there was enough heat to...

Gee I Dunno. I reckon if there was enough heat to affect the timing belt I would expect the plastic belt cover to look a little stressed, but it isn't !

I think the sheer volume of air passing...

Forum: Porsche 928 Technical Forum

04-15-2009, 05:16 PM

Replies: 61

More power out of a 928 motor?

Views: 9,055

Posted By Roy928tt

I've only been messing with motors for 30 yrs,...

I've only been messing with motors for 30 yrs, and if there is one thing I've learned, it's that revs are expensive.

As you increase the peak revs, the forces acting on the various internal...

Forum: Porsche 928 Technical Forum

03-30-2009, 01:37 AM

Replies: 19

New to Porsche ownership..was it wise?..lol

Views: 1,242

Posted By Roy928tt

Lovely looking car, the colour really suits it. ...

Lovely looking car, the colour really suits it.

I shouldn't be the devils advocate, but the 928 was originally designed to use a 4 barrel carby!

I ended up ditching the CIS and fitted a couple...

Forum: Porsche 928 Technical Forum

03-09-2009, 04:20 PM

Replies: 10

928 bolt on question

Views: 1,024

Posted By Roy928tt

I thought the question was "bolt on", a hybrid is...

I thought the question was "bolt on", a hybrid is hardly a "bolt on". I'm thinking the only real "bolt on" solution is a centrifugal supercharger insallation they seem quite popular and easy. Some...

Forum: Porsche 928 Technical Forum

02-19-2009, 08:24 PM

Replies: 10

Stainless hardware, nuts and bolts?

Views: 864

Posted By Roy928tt

Ahh!... Mate, one day you will regret fitting...

Ahh!... Mate, one day you will regret fitting allen head bolts everywhere, take the rear cam covers for example, awkward enough with normal bolts, even more so with allen heads ......looks great , a...

Forum: Porsche 928 Technical Forum

02-11-2009, 02:07 PM

Replies: 30

Iron liners

Views: 2,648

Posted By Roy928tt

Hi John, always good to see your contributions, I...

Hi John, always good to see your contributions, I particularly agree re head gaskets and tuning. Cheers

Fras, I seem to recall you are in Australia, my local engine shop, Rhemac Motors, Gawler,...

Forum: Porsche 928 Technical Forum

01-29-2009, 01:49 AM

Replies: 11

Replacing camshaft housing gaskets.

Views: 2,067

Posted By Roy928tt

I agree entirely with Landseer, recently removed...

I agree entirely with Landseer, recently removed my cylinder heads and discovered that the leaks that I thought were from the cam cover gaskets were really the 'O' ring and rear covers, being a...

Forum: Porsche 928 Technical Forum

01-28-2009, 01:54 AM

Replies: 672

Sticky: please add your 928 photo to this gallery and your location thanks

Views: 232,184

Posted By Roy928tt

Roy from Adelaide South Australia '79 5 speed...

Roy from Adelaide South Australia '79 5 speed running on LPG and fitted with a couple of garrett T28 turbos http://forums.pelicanparts.com/uploads14/porsche+LPG+0191233136418.jpg

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