Engine rebuild and power mods

[makeitfit]

All in now Rick. Gear box went on a treat . Spend nearly all day refitting stuff, looking for stuff and refitting stuff:lol

 

[makeitfit]

All in and running, BUT , the turbo now sounds like oil starved or something I thought at first it was just because the intercooler was off.
Investigations required
Oh and the blasted clutch slave cylinder has retired after 22 years active service :lol

 

[makeitfit]

The Pearl is back

Here we go, it lives again
Had a few late nights fighting lots of niggles. Clutch, turbo and electrics to name but a few. Any road up I have today got enough bits back together for the Black Pearl to run again.
Almost no boost at mo and no idea where I am on fueling, but it goes
https://youtu.be/RRMxSNIgHzU

 

[solarman216]

Does not sound right at all Pete, you sure nothing dropped in your turbo when you were not looking, Rick

 

[solarman216]

Does your new pump have a boost diaphragm same as my Trol if so is it damaged? or not connected, Rick

 

[makeitfit]

Well turbo was making a chiruping kinda noise the other day. I stripped oil and water feeds , checked free spinning and play etc. Nothing I could find amiss . I have not set boost yet .
I'll try boost tomorrow as I think the pump won't "advance" till it sees some .

 

[luke1987]

Might sound a bit daft Pete but how sure on the profile of that cam were you? I mean what was the overlap like? Its not just blowing all the boost down the exhaust is it giving you the chirrup sound.

 

[makeitfit]

Might sound a bit daft Pete but how sure on the profile of that cam were you? I mean what was the overlap like? Its not just blowing all the boost down the exhaust is it giving you the chirrup sound.

I have to admit I have no idea. I put my faith in a faceache friend who has the same profile cam, infact mine is not quite so grr as his on the advice of the guy in cam profile shop. What do you mean by the overlap ?
The chirrup sound has gone now by the way. I guessed it may have been some sort of oil issue as when I refitted the oil supply after checking it, all was fine :nenau
I have only got a little bit of boost at mo as I've not reset the waste gate. Another job on the list lol

 

[luke1987]

Im just thinking, after you had the cam re-profiled did newman send you a data sheet to set up the cam timing correctly? As it may be different from the original factory timing and will need dialling in properly with a dial gauge. The overlap is the time that the inlet and exhaust valves are open at the same time. A long overlap on a turbo engine is bad as you lose boost down the exhaust.

http://www.burtonpower.com/tuning-guides/tuning-guide-pages/camshaft-fitting-timing.html

Have a read it explains in more detail than I could type .

 

[makeitfit]

No I had no data from Newman but I can ask them . I did dial in a different pump timing again on the advice of faceache buddy.

 

[solarman216]

Hi Luke, I was not aware that there was a vernier adjustment on a 2.7 cam, it is gear driven and surely one tooth out either way would be bad, or have I missed something, Rick

 

[luke1987]

Pump timing wont matter if cam timings out. Does it feel flat when you drive it?

 

[luke1987]

Hi Rick, There isnt a vernier adjustment on the td27 but altering the profile will alter lift and duration so at tdc the inlet valve will not be at maximum lift. One tooth out generally will not do much harm it will just run like a bag of spanners. You compensate for the lack of a vernier like you do on the old chrysler v8's with an offset dowel.

 

[makeitfit]

Yes it does feel flat

 

[luke1987]

Yes it does feel flat

Ive got my engine at work with no head on it so ill get the dial gauge out at work tommorow and find out the standard td27 cam specs so we can compare it to your altered profile and see if any adjusment is needed for it :thumbs.

 

[solarman216]

Off set dowel, now I understand, thanks Rick

 

[luke1987]

Off set dowel, now I understand, thanks Rick

No problem Rick. I explained the max lift wrong :doh as the valve is never fully open at tdc, its normally between 100 and 120 degrees after tdc otherwise the valves would hit the pistons.

 

[makeitfit]

Ive got my engine at work with no head on it so ill get the dial gauge out at work tommorow and find out the standard td27 cam specs so we can compare it to your altered profile and see if any adjusment is needed for it :thumbs.

Thanks Luke, you're a star :thumbs

 

[solarman216]

No problem Rick. I explained the max lift wrong :doh as the valve is never fully open at tdc, its normally between 100 and 120 degrees after tdc otherwise the valves would hit the pistons.

Yes I sussed that but did not want to criticise a younger superior mind, we all make typo's, Rick

 

[makeitfit]

Ive got my engine at work with no head on it so ill get the dial gauge out at work tommorow and find out the standard td27 cam specs so we can compare it to your altered profile and see if any adjusment is needed for it :thumbs.

Hi Luke, have you had a chance to look at your engine re cam timing ?
I admit I'm in the deep end here and trying to understand what you mean exactly. You say the boost going down the exhaust, isn't that what it should do ? OR do you mean the combustion burn/bang is not capitalised ?