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Opel Manta GTE Exclusive Project update 21/09/2008


Suzy
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Good is't it, it's a rare edition battery that was only released on one manta!!!!

It came on the car when we picked it up and when i bought all the bit I completely forget to buy a new piece of black so had to put it back on as was!!!!

Suz

Lesson learned - If you want something doing do it yourself!!!!!!!

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Well she is now all up and running tappets all set, everything back on and she idles without stalling. Little bit of tuning required but other than that all looking good.

This was done on a mobile so excuse the quality!!!!!!!

th_10022008002.jpg

Lesson learned - If you want something doing do it yourself!!!!!!!

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Great progress in such a short space of time! Hats off to you [:D]

Nice windscreen wiper action too!![:P]

________________________________________________

Mike OMOC #6109

This ere is Opel Country, where on a quiet day you can actually here the Fords rusting

mikeyrulesATjustopelvauxhall.com

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Yup currently window wiper come on as soon as you start theengine for about two minutes!! Why? your guess is as good as mine, another thing I've got tot sort.

Next on list will be to get the carbs set properly and timing correct, then sort all the little bits and pieces out that need doing and fit central locking.

Oh and buy and nice little bits I find prior to the full strip down and rebuild in June.

Suz

Lesson learned - If you want something doing do it yourself!!!!!!!

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Will have to try that.

Just to update when went out to start her tonight have come across a couple of rather large issues.

Firstly she will run albeit rather badly, as soon as you rev her she coughs and splutters with the odd pop noise. Almost seems as if one carb isn't working (number three and four)

Secondly the engine temp went through the roof within 10 mins or so. (The thermostat is not in place but she drove 200miles home without one)

As you prob know she is running twin webbers and i have to say I have no clue how to set these up, was going to take her somewhere to have this done but with engine temp prob she is now undrivable.

Any advice on this would be greatly received.

Lesson learned - If you want something doing do it yourself!!!!!!!

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What a Fantasic thread

have really enjoyed it and looking forward to further posts

keep up this fantasic work Suzy....your a women after me own heart

good on ya

[8D][8D]

MadamVectra

Or Should That Be MadamMantaMaddness!!

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1972 Manta 1.9

A is Best

Dawn W.

OMOC 5805

North East Rep.

http://doginnheighington.blogspot.com/

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Cor! Nice to see the webers bolted to a CIH than a red top for a change and that you've gone to the bother of engine bay cosmetics (ie paint and cleaning)

If your fuelling is wrong then running up into high temperature would be expected. Although checking common faults with the voltage reg, viscous fan, and especially after draining the coolant; air locks are obviously all worth doing. I don't know from experience but I have heard (on another topic) that running a CIH without a thermostat is inadvisable for whatever reason, hopefully someone could shed some light as to why, but I thought it'll be worth mentioning. As for setting up the webers, you could get a manual (i think haynes do one) and borrow an airflow metre to at least get them set up and balanced so you can drive to a specialist.

When the temp gauge is towards the red, is the radiator top hose pretty much untouchable? (it should be like a hot cup of tea when normal)

Nice looking manta, maybe see it at Billing this year??

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CHECKOUT MY V8 VIDEO HERE http://uk.youtube.com/watch?v=Djuq2xoCp1E

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If the thermostat housing is off a GTE no thermostat = bad

As opposed to simpler setups where a closed stat merely stops water flowing a GTE stat and housing direct it to circulate the block or through the rad, as the stat opens a plate on the bottom closes another passage.

No warranty implied or given [:D] New shorter posts to minimise global warming by conserving ones and zeros [:D] The uncivilized end of the North West [:(]

Other rust buckets are available such as http://www.chevettes.com/forum/viewtopic.php?t=12922

sig.jpg

Dann Merino should definitely buy one of these. Well not this one.....

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Thanks guys

Have just been out and done another compression check and now back to square one, have compression on front two of 110 and 112 but both 3 & 4 are showing 70 so despite all my thoughts that the bottom end looks good It would appear I may be wrong.[:(!]

Will be putting bit of oil in the cylinders and checking compression again to make sure this is the case.

Think prob as the carbs were run with no filters maybe something has been sucked in and messed it up somehow.

Now have three options

1.find a new bottom end

2. rebuild current one

3. buy new engine to run till June and rebuild current engine fully so that when she is all welded and painted then can put equivilent of new engine in.

Will keep you posted.

Suz

Lesson learned - If you want something doing do it yourself!!!!!!!

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You haven't over tightened the rockers have you? Accidentally letting the valves seat incorrectly.

If the oil in the bores shows that it is the upper cylinder that is the problem try backing the rocker nuts off and trying the compression check again.

000_0260.jpg

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Do the oil in plug holes it's a quick test.

As long as you don't put way too much in (it has to be enough that it will work into the gap between the cylinder and piston but not a huge amount probably between a tea spoon and desert spoon) it can't help valves so if it sorts the compression it's rings, if not it's above there.

No warranty implied or given [:D] New shorter posts to minimise global warming by conserving ones and zeros [:D] The uncivilized end of the North West [:(]

Other rust buckets are available such as http://www.chevettes.com/forum/viewtopic.php?t=12922

sig.jpg

Dann Merino should definitely buy one of these. Well not this one.....

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quote:Originally posted by mantadoc

If the thermostat housing is off a GTE no thermostat = bad

As opposed to simpler setups where a closed stat merely stops water flowing a GTE stat and housing direct it to circulate the block or through the rad, as the stat opens a plate on the bottom closes another passage.


id="quote">id="quote">

Thanks Doc, I knew it was something like that. Suzy, get yourself a thermostat as well as some K&Ns for the webers!

Just out of interest what would the carbs have sucked in that'd damage the bottom end? You should be able to see any resultant damage with the head off. More likely would be damage/blockage in the carb fuelling cylinders 3&4 or (first place I'd look) damage to one or both of the inlet valves above 3&4. If I'm wrong no loss, but don't go to the expense and effort of rebuilding the short block only to re-fit a faulty carb or dodgy valved head and have the same problems.

newbana.jpg

CHECKOUT MY V8 VIDEO HERE http://uk.youtube.com/watch?v=Djuq2xoCp1E

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Gonna check the timing and do the oil test and as you said check fuelling prior to buying whole new engine. I have already bought a themostat so that will be fitted, I put back as bought so could then diagnose any other probs without wondering if something I had changed might be a prob. All valves should be fine were both reseated and cleaned when I rebuilt the head.

Suz

Lesson learned - If you want something doing do it yourself!!!!!!!

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I'd just like to point out that if the compressions are down on two cylinders i dont think fueling is going to be to much of an issue.

Also i would have expected, but maybe i'm wrong, the compression test readings to be in the region of 135 - 145psi?

quote:Have just been out and done another compression check and now back to square one, have compression on front two of 110 and 112 but both 3 & 4 are showing 70 so despite all my thoughts that the bottom end looks good It would appear I may be wrong.


id="quote">id="quote">

That's why i suggested that the rockers have been over tightened. This would effect all four cylinders to some degree.

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It'll still run fine at 110, wouldn't usually expect more than 10% variation across them though.

No warranty implied or given [:D] New shorter posts to minimise global warming by conserving ones and zeros [:D] The uncivilized end of the North West [:(]

Other rust buckets are available such as http://www.chevettes.com/forum/viewtopic.php?t=12922

sig.jpg

Dann Merino should definitely buy one of these. Well not this one.....

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Today sorted overheating prob by fitting thermostat and bled system.

Checked valve timing and this all appears to be good. Redid the compression check and got same values so did oil test and increased to 85 and 89 on 3 & 4. Odd thing is now had it running a lot this afternoon seems to be holding same figures so appears oil poss not making difference. I took her for bout 3 mile run too andshe is running so much better.

All of these things, plus the hone marks in the cylinder and other discoveries I have made make me think the engine was freshly rebuilt put in the car and would not run right so he sold it.

I'm thinking correct me if wrong that we are now looking at a fuelling prob as when you get her above 4000rpm and on the second choke she purrs[:D]

The first half of the throttle coughs and splutters when you put your foot hard to the floor she picks up and flys.

I have adjusted the Fuel pressure regulator and given it a little more fuel but again I don't know what pressure the 40DCOE's should have behind them.

Going try to find the correct jets required for the carbs on this engine and check they are correct, then my knowledge runs out and I call in a specialist!!!!!!!

Suz

Lesson learned - If you want something doing do it yourself!!!!!!!

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