Engine rebuild and power mods

[makeitfit]

OK guys I'm in the deep end again
I have the Black Pearl's new engine in bits prior to to it's full power rebuild.
It's been lying around a while by the looks and some water has made it's way down open valves. Not much but I'd like your opinions. I can feel it with my finger but I'm not sure what's best to remove it. I'm trying to avoid a crank rebuild too :lol

I loobed it all before turning the crank,which it does smoothly.
Piston tops look good

I'm also wondering now as I have the head off are there really any meaningful gains available porting and polishing ?
Cam reprofiling ? I have this info from my T2 engine tuning friend in Italy.

Any top tips Rick ?
This engine TDi is getting a manual pump swap . Is there any benefit from fitting Bosch injectors instead of the Zexel ones ?
Discuss :naughty

 

[macabethiel]

Bore corrosion

I would not worry about the slight bore rusting just bang some oil on it and forget. If it made you feel better you could smear some Jenolite or similar on it to turn it Blue looking.

I don't think with a Turbo induction system that there is any worthwhile gain in polishing inlets etc.

 

[luke1987]

Needs a quick hone that mate, Whip sump off pistons and rods out you can get away with leaving the crank in, Plus doesnt do any harm to check the condition of the bearings.

 

[Banshee]

That will teach you to leave your goodies outside!!! :doh

Sweet thread though mate, keep the updates coming :sly

 

[makeitfit]

Needs a quick hone that mate, Whip sump off pistons and rods out you can get away with leaving the crank in, Plus doesnt do any harm to check the condition of the bearings.

Sump is off already :thumbs Hone was on my mind but as always I was hoping for a short cut. Hey ho in for a pound

 

[macabethiel]

Sump is off already :thumbs Hone was on my mind but as always I was hoping for a short cut. Hey ho in for a pound

I would leave well alone mate. When that engine fires up that surface corrosion will be gone in a couple of minutes running, the rings will bring it to a shine in no time.

Whatever you do don't use a glaze breaker or similar tool trying to make it perfect.

 

[luke1987]

But then you run the risk of sticking rings due to the rust clogging them up seen it happen to many times do it once do it right. If you brought that to me at work I would flexi hone it for you but I think you are a bit far from me mate.

 

[makeitfit]

But then you run the risk of sticking rings due to the rust clogging them up seen it happen to many times do it once do it right. If you brought that to me at work I would flexi hone it for you but I think you are a bit far from me mate.

Flexi hone ? I like the sound of it already :thumbs
Where about in the North West are you ?
Do you do engine machining per chance ?
Cam reprofiling ?
Tell me about your childhood :lol

 

[solarman216]

Flexi hone ? I like the sound of it already :thumbs
Where about in the North West are you ?
Do you do engine machining per chance ?
Cam reprofiling ?
Tell me about your childhood :lol

You can buy a flexi hone cheap as chips from the likes of machine mart, just a spring loaded three legged thingy with honing stones on it, goes into electric drill, but use with care, Rick

 

[makeitfit]

You can buy a flexi hone cheap as chips from the likes of machine mart, just a spring loaded three legged thingy with honing stones on it, goes into electric drill, but use with care, Rick

Indeed, just been on youtube for a look see. The flexi hone ones look a doddle to do but are about 100 of your Engerlish pounds
Those three pronged ones are about 20 quid . I'll get one and practice on the old block

Rick do you understand cam re-profiling ?
I've been sent some numbers that mean something to cam people but I no not what they are :lol

 

[solarman216]

Indeed, just been on youtube for a look see. The flexi hone ones look a doddle to do but are about 100 of your Engerlish pounds
Those three pronged ones are about 20 quid . I'll get one and practice on the old block

Rick do you understand cam re-profiling ?
I've been sent some numbers that mean something to cam people but I no not what they are :lol

Yes but unimportant for you to understand as has to be done on dedicated machine for the job, sorry but trusty angle grinder just does not get close, Rick

 

[luke1987]

If you can give me the lobe measurements that you have for the cam profile that you want im sure I could grind it for you if not I could put you in touch with someone who could . Company I work for is in Bolton our website is www.fixmyengine.co.uk not much we cant do. Currently got a jensen intercepter ss sixpack mopar v8 in for a rebuild with all brand new old stock chrysler parts if you like your big stuff.

 

[makeitfit]

If you can give me the lobe measurements that you have for the cam profile that you want im sure I could grind it for you if not I could put you in touch with someone who could . Company I work for is in Bolton our website is www.fixmyengine.co.uk not much we cant do. Currently got a jensen intercepter ss sixpack mopar v8 in for a rebuild with all brand new old stock chrysler parts if you like your big stuff.

What a great offer :thumbs
Do these measurements make sense to you ? If so I can send the cam off to you on Monday

 

[luke1987]

Right so those numbers you have given me tell me at what time the cam opens and closes so on the intake stroke the cam opens at 30 degrees before top dead centre and closes at 68 deg past tdc. And on the exhaust stroke 65 degrees btdc and 27 degrees after tdc. But we are missing the lift of the cam ive worked out the duration of the profile which is inlet 278 degrees and exhaust 272 degrees but I would still need the lift of the cam to work out the profile.

 

[Banshee]

Right so those numbers you have given me tell me at what time the cam opens and closes so on the intake stroke the cam opens at 30 degrees before top dead centre and closes at 68 deg past tdc. And on the exhaust stroke 65 degrees btdc and 27 degrees after tdc. But we are missing the lift of the cam ive worked out the duration of the profile which is inlet 278 degrees and exhaust 272 degrees but I would still need the lift of the cam to work out the profile.

We have an engine boffin here :naughty

 

[luke1987]

Best question I could ask is what do you want your engine to do. What I mean is are you looking for max power or reliability or both because there has to be a compromise its no good making 300 hp for 30 sec and it going bang.

 

[luke1987]

Ill leave my cam profile here .


And valve lift

 

[luke1987]

Along with £500 of piston porn .






342hp sat on the kitchen floor...

 

[makeitfit]

Right so those numbers you have given me tell me at what time the cam opens and closes so on the intake stroke the cam opens at 30 degrees before top dead centre and closes at 68 deg past tdc. And on the exhaust stroke 65 degrees btdc and 27 degrees after tdc. But we are missing the lift of the cam ive worked out the duration of the profile which is inlet 278 degrees and exhaust 272 degrees but I would still need the lift of the cam to work out the profile.

Ah yes :doh + 4mm lift :naughty

 

[makeitfit]

where the tissues ?my screen is a bit euw :naughty:bow:splif: