Mk1 Pi engine rebuild

Show us the work you're doing on your Triumph 2000/2500/2.5.
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M5driver
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Location: Northamptonshire

Re: Mk1 Pi engine rebuild

#21 Post by M5driver » Sat May 25, 2019 9:47 am

No John, use the Golf can't beat 61 to 68 mpg. The current pi engine is ok but uses oil and the pressure gets very low when hot.

The block is black. I did buy another colour but did not like it. Should have gone for dayglow yellow.

Anyhow the crank is back in with new vandevell shells. The thrust washers have been done one std one oversize and the rear crank seal is back on. The pistons have rings on with the gaps all checked. New oil pump checked for tollerance you never know it could be wrong. Next to go on is a new front sealing block from jigsaw racing. It needs a little fettling to fit. No-one seems to make things properly these days or check them for correct fit.
Pictures to follow.
Chris Lennard Mem 1906
Triumph 2.5pi MK1 1969 Damson, tan interior
TRiumph 2.5pi MKII 1972 Mallard, black interior
BMW E34 M5 LE 47/50 Orinoco Green
VW Golf mk6 Bluemotion Black

M5driver
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Posts: 58
Joined: Wed Jan 13, 2010 4:39 pm
Location: Northamptonshire

Re: Mk1 Pi engine rebuild

#22 Post by M5driver » Mon Jun 03, 2019 4:50 pm

Well folks only 3 weeks to the national and progress has been made.

The crank is in and endfloat set. The rear oil seal housing is in. The front bridge piece is in, those wooden wedges are a pain they broke up when being tapped in. I made more of my own. It took ages to find all the little pieces of wood!
Five of the new pistons are in with new rod bolts from ARP.
The camshaft is in and the front engine plate is on.

Now for the painful bit I broke a piston ring when placing it in the compressor. Don't know how it happened but it did. So a whole new set on order just for one compression ring.
Its a bit of a setback but I'm learning as I go.

The oil pump is in and a new relief valve fitted, with the sump temporarily fitted to keep the dust out.
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The attachment P1030315.JPG is no longer available
Chris Lennard Mem 1906
Triumph 2.5pi MK1 1969 Damson, tan interior
TRiumph 2.5pi MKII 1972 Mallard, black interior
BMW E34 M5 LE 47/50 Orinoco Green
VW Golf mk6 Bluemotion Black

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