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why are engine rebuilds so expensive?

bingbongbing

Silverstone
Joined
6 Sep 2021
Messages
111
Now I've got a car, a mate is looking, hes found one with engine issues. however a bit of internet shows that engine rebuilds on a 993 can be overly expensive.

As someone who's rebuilt an s50b32 engine myself, and is about to do a 240z engine, I can't understand why either. Given machine work costs the same on any engine, forged pistons and rods etc cost the same etc etc., where's the other costs coming from?
 
Most of tbe guys on here dont do their own work,they farm it out. You're right,it doesn't cost any more to rebuild an engine but if you are paying an indie £100 per hour to remove,strip,re uild and refit a 993 engine the costs ramp up. There's the rub.
 
Big Jock said:
Most of tbe guys on here dont do their own work,they farm it out. You're right,it doesn't cost any more to rebuild an engine but if you are paying an indie £100 per hour to remove,strip,re uild and refit a 993 engine the costs ramp up. There's the rub.

its not really the indie rate either. its the amount of labour that people must be paying?

Or is it just 'Porsche tax'?
 
Well a boxer or vee engine will instantly be much higher labour cost than an inline due to having 2 top ends. Add on the cost of extra parts too and you can easily see why they cost more. My 996 has 5 chains all with their own worn chain guides and tensioners, 4 cam shafts, 2 inlet manifolds, 2 outlet manifolds, etc.
 
Just wondering what you consider expensive as no figures in the thread so far.

I guess a lot will depend on what you get done and the quality of the work.

Top end vs full rebuild, replace everything vs retain most original parts, upgrade or keep original etc.

I've never had an engine rebuild, but when I sought quotes for a respray and (what I considered minor) bodywork it varied from £3k to £18k. To me they all seemed expensive for a tiny car with no roof (cab). But staff are expensive and quality work from experts comes at a price.
 
was quoted circa £14k+vat for a full rebuild.

Not sure what that 'full' rebuild included........
 
i have herd of a couple of £18,000 rebuilds done properly .one a 3.8 upgrade
 
Porsche parts (especially for the old stuff) are mega expensive and there's a lot of parts once you actually tear one down. Even just replacing things like head studs, rings and oil seals throughout , sharp adds up.

Unfortunately it's the nature of the beast. Either buy a one that has been rebuilt or factor it into a car that hasn't been.
Without wanting to sound arsey, there's not much you can do if you aren't capable yourself, so no point in complaining really. That goes for everything in life.
Builders only lay bricks and floors and fit roofs, but if you can't do it yourself it's gonna cost mega bucks. :wink:

You have 3 choices. Do it yourself, pay someone else, or don't play at all. :thumb:
 
i'd have guessed at

new forged pistons £1200
New forged rods £1300
valves/rockers/springs etc £1500(all top end parts)
dynamic balancing/decking/honing/boring £1100
New RS type cams £1400
gaskets/misc £600

£7100

40-50 hours labour? say £80PH £4k(5k with vat).

so circa £12k all in for a 'built' engine?

that was the fagpacket we did.
 
It is the £80 per hour that needs examining.

£80 ph (or more) has to cover the rent, tax, NI, rates and so it goes on.

The chap that does the work probably gets £20 ph if lucky, so the answer is to find a company with lower overheads, after all as the OP intimated, an engine is an engine, there is nothing special in terms of re building a Porsche one.
 
martin t said:
It is the £80 per hour that needs examining.

£80 ph (or more) has to cover the rent, tax, NI, rates and so it goes on.

The chap that does the work probably gets £20 ph if lucky, so the answer is to find a company with lower overheads, after all as the OP intimated, an engine is an engine, there is nothing special in terms of re building a Porsche one.

This ^^^
 
As I tend to see it, why can one handbag or pair of shoes cost 100 times more than another...MARKETING, or if you prefer hype, and boy do we buy into that big time...? If you want to add peer pressure or imagined status, I suspect we are getting there..Then there is the win on Sunday sell on Monday, and that is the hook that caught me.. (-:

I arrived at Porsche ownership having worked my way through a series of tired old sports cars my fist car being a rotten old Frogeye Sprite that took over a year of learning how to nail it back together crudely.. MGB, then on to Lotus, the 60`s Elan being thought to be the epitome of perfection..and on the road in the early 70`s it sure was... though mine was just another old dog on it`s last legs but boy it could go some..(-:

Spare parts costs, given the price of a genuine Lotus track rod end, on which the only part of it which was genuine Lotus derived, was the name on the adhesive label, the part being from a Triumph Herald/Spitfire and no doubt many other similar vehicles, and which I could have been bought at much less expense if bought from the likely manufacturer Quintin Hazel...? I wrote to Lotus bitterly complaining that I was an enthusiast of the marque trying to keep an old dog alive on a limited budget and felt I was being taken advantage of by sheer profiteering... Yeah I was younger and more naive than am now.. I think. They did at least write back, explaining it costs a lot of money to develop and run a racing team in F1 or some such..Live and learn..?

I arrived at Porsche ownership by the same means, years of reading all the hype relating to LM wins. I tripped over a rotten old 912 and swapped my "self-restored" 6276cc Jensen Interceptor for it at the time of the fuel crisis..!! .After perhaps a year of welding and much else in my spare time, I was the proud owner of a Porsche, all be it one with only four cylinders. Having owned a 60`s Beetle the usual Germanic qualities shone through in the 912, in terms of build quality and material choices, other than the rotten old bodywork, even if the shut lines (those that were still intact), were perfect..Hmm..?

Other than the race heritage, the thing that captured me was the quality of the mechanicals, nuts and bolts that loosened off, where corroded Brit iron would be expected to break off on applying the spanner. Then there were the sophisticated barrels, none of your industrial Beetle cast iron stuff here, there had been a fair amount of thought put into adding lightness, a concept Mr Chapman had educated me on to some degree, but this time with a different level of quality to the extent it would be reliable a design criteria that seemed to be bourne out by Porsche`s LM victories...?

On the basis of engineering quality and race success I was hooked, and that was the start of more than a decade of Porsche ownership, three air cooled in total... The real DOWN side for me was that the YUPPIES chose my favoured marque to exhibit their excesses... Sigh!

Just like Lotus there was a premium on parts £25 for a pair of 911 valve springs, two springs per valve, thus £300 for a 911 engine set, whereas a whole engine set for a 4 cylinder MGB, 8 in total, was £14, and no doubt BL made a profit at that price, and a broken valve spring on an MGB was unheard of.... Though to be fair the old B`s power dropped off as you neared max revs, whereas the Porsche would run in to the red without the slightest hint it was about to begin to suffer engine damage.... Those Bosch spring loaded rev limiting rotor arms would often stick allowing over revs any time you cared to venture into such danger zones..!

So there you have it your pays your money, you makes your choice.... As to whether you think you get enough value for your money... I suspect only YOU can answer that...?

Me..? On arriving at a time when a return to Porsche better fitted the grumpy old man I had become.. Imagine my disappointment to find tales of engine failures which arrived on the scene with the advent of water-cooling the 911 derivatives, and plagued perhaps 3% of my favoured marque over a period of time from the 996 all the way through to the 997.1, Jeez type about disappointment..!!! . OK, OK so air cooled were not perfect but at least they were infinitely rebuildable and did not seemingly self destruct in the way water cooled could do if the IMS gave up the ghost..That seemed to me like a game of Russian roulette, with a circa £15K bullet loaded and a 3-5% chance of an unfortunate outcome...Too much of a gamble for me, at my stage of the game in buying what would now be an old Porsche, perhaps with an increased risk of a rebuild required along with all the other complexities built into modern vehicles as they age..

Back to the expense of repairs, yeah well you only have to look at the showroom/workshop structure of an OPC to imagine that someone has to pay for that... £155 +vat/hr plus somewhat expensive parts...?

I did all my own work other than trim, thus parts were the main cost for me and I would buy O.E. because I had bought into the concept of quality engineering in my time spent with air cooled...I even bought self tapping screws that came in plastic bags with a Porsche I.D. and would be either black or gold anodised as fitted to my cars. Though that changed near the end of my air cooled ownership days, I began to wonder if the then local dealership was cutting corners, or was it Porsche themselves... Hmm..?

Given that which seemed to me to be a possible alteration in the quality and packaging of small parts over the years, that and the time it seemed to have taken to sort out the water cooled engine issues, I am still left just a tad disappointed that something as seemingly simple as the material choices for exhaust fixings appears to be below my expectations... I can accept that some materials more suited to a particular task may corrode in advance of others, and that being the case then it seems reasonable to incorporate avoidance of that as a possible problem into a maintenance programme, BEFORE the corrosion creates any real risk to their removal and replacement such as seems to be the case with the requirement to carefully drill broken steel fixings out of a alloy cylinder head..?

For the above task it seems that the apparently high quality Stormsky jig is a prerequsite for this task, whereas my thinking would be that such fixings might be advised as replaced in whatever time period Porsche decided would be advisable within normal maintenance schedules..?

I think I have read on here where the estimate for replacement of some corroded exhaust manifold fixings was £700 which I think might have been at an OPC, though not entirely sure..?

You could check out the prices of "Genuine" parts and perhaps even improved parts on here..?

Buy Porsche 991 (911) MK1 2012-2016 Exhaust Nuts / Bolts / Studs | Design 911

To finish off this ramble, yeah, my good lady has a few pairs of shoes and more than one handbag, and I am very happy to be back to owning a Porsche once again, so what does that say about me... :?: :floor:
 
My starting point would be understanding what exactly is wrong with the engine and does it need a 'Full' rebuild as opposed to a top end or bottom end one?

993 engines tend to be bulletproof so what exactly has let go or has someone decided to let it run without oil misreading the true oil level?

My Indy can rebuild 911 air cooled engines in his sleep as once they are out (easy) they're not difficult to work on its the cost of the parts and then negotiating the labour cost.

I suspect you could source all the parts, pay for them yourself so you're not getting any additional mark up, even courier the engine up to him on a pallet if you don't want to take the car any great distance and I suspect get a rebuild labour price to c£5k. That said I can't speak for him but I reckon I'm near the figure.
 

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