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What should I pay for an engine rebuild? -
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Hi everyone,
The misfire on my Stag has been diagnosed as due to low compression on 2 cylinders aggravated by the use of French supermarket petrol - ethanol. My Stag specialist is saying that whilst the problem could be valves at 68k miles a rebuild would be justified. Cost estimates depending on what is found is a mere £5k to £6k. The advantage is of course I should 'know' I then will have a good engine all sorted.
Two thoughts come to mind. Is the cost about right?
Are rebuilt secondhand engines available from SOC members for less?
Would appreciate advice, comments and offers
Nigel
Further thought - can I sell and cut my losses and find another Stag that is better? ( I have probably already spent more on the car than it's worth).
Well he would think a full rebuild is justified. I think price quoted is at top end. If adjacent cylinders are down it may be head gasket. Could also be valves. Top end rebuild would be a fraction of that cost. More detail needed.
My engine rebuild came to £5500 including removal and refit of engine, replacement of water pump with an EWP complete with controller, moved and uprated alternator, fitting of electric fan, Engine rebuild included tufridden and balanced crank, head skim and rebush for jack shaft and all fluids. Would have been around £4500 if just a straight rebuild. Price also included a revisit at 500 miles to re-torque head. Job done by EJ Wards.
Dave.
Dave.
Expert:- Ex is something that has been and spurt is a drip under pressure.
Well he would think a full rebuild is justified. I think price quoted is at top end. If adjacent cylinders are down it may be head gasket. Could also be valves. Top end rebuild would be a fraction of that cost. More detail needed.
Unfortunately the cylinders with low compression are on opposite sides. Otherwise I would also suspect a head gasket. I suspect valves as previous owner DID NOT use a lead additive.
As for rebuilding against top end only work with nearly 70 k miles is there not a risk that a new reinforced top may lead to bottom end issues?
I have a rebuilt unused engine that Ralph of rallyn motors built for himself but unfortunately passed away before he got to use it is complete with all ancillaries and
Has been bench run to check it over is mated to a recon bw35 auto gearbox
Was looking for £3000 no exchange needed
Stag Owners Club Forum has registered Tonywhite as a Trader in used parts for The Triumph Stag. 13.12.2017
I have a rebuilt unused engine that Ralph of rallyn motors built for himself but unfortunately passed away before he got to use it is complete with all ancillaries and
Has been bench run to check it over is mated to a recon bw35 auto gearbox
Was looking for £3000 no exchange needed
I have a rebuilt unused engine that Ralph of rallyn motors built for himself but unfortunately passed away before he got to use it is complete with all ancillaries and
Has been bench run to check it over is mated to a recon bw35 auto gearbox
Was looking for £3000 no exchange needed
As for rebuilding against top end only work with nearly 70 k miles is there not a risk that a new reinforced top may lead to bottom end issues?
Nigel
This is what faversham classics and robsport have told me. Both came up with six grand for a complete turn key job.
I have exactly the same dilemma as you.
I have been agonising over the options for a while and get equal numbers of opinions on both sides.
In the end I don't think you will get a definitive answer either way. You will just have to do what feels best to you.
At the moment I am on the side of the new engine!
due to low compression on 2 cylinders aggravated by the use of French supermarket petrol - ethanol.
Use of unleaded or ethanol based fuel will make NO DIFFERENCE whatsoever to the engine.
The real compression ratio of the engine with all the restrictions is FAR TOO LOW to worry about it.
Because the heads are made of alloy, already has hard(ish) valve seats. (about 4.5-5.1:1 REAL).
That engine will run perfectly ok with no damage on the lowest grade of petrol found in Eastern Europe.
92 octane.
Use of unleaded or ethanol based fuel will make NO DIFFERENCE whatsoever to the engine.
The real compression ratio of the engine with all the restrictions is FAR TOO LOW to worry about it.
Because the heads are made of alloy, already has hard(ish) valve seats. (about 4.5-5.1:1 REAL).
That engine will run perfectly ok with no damage on the lowest grade of petrol found in Eastern Europe.
92 octane.
i always understood that it was the exhaust valves that were the issue. TR7 exhaust valves were the ones to use
my stag runs like **** on the cheap french unleaded so I don't
I tend to avoid UK supermarket unleaded for the same reason
Normal unleaded is good, super unleaded is nicer imho
Stags and Range Rover Classics - I must be a loony
Over the run of 10,000 miles a year in my Stag, I have tried several brands of unleaded, super unleaded and European unleaded. I have never noticed any difference at all.
Except that super unleaded empties my wallet faster.
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