Sprint Engine

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Mad Mart
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Sprint Engine

#1 Post by Mad Mart »

So today I decided to strip a spare Sprint engine I have in my garage. Remember the barn Sprints?.....


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Well this is the engine that came from the Honeysuckle one...

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The idea is to strip it down completely & see if it's worth rebuilding it or scrap it.

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One of the bolts holding the timing chain cover in place had seized solid and the bolt sheared as I tried to undo it. The bolt itself had seized to the cover & as I was trying carefully to prize it off, it cracked. I have a few spare so wasn't too upset. Just a shame to ruin a decent cover.

The pistons seem to be seized so I have them soaking & will keep them like that for a day or so.

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Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


2012 Porsche Boxster 981 S


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Steve28
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Re: Sprint Engine

#2 Post by Steve28 »

is the honeysuckle one your next project then
steve
1973 yellow Sprint L reg
1979 1500 SE T reg
1979 1500 SE V reg
1980 vermillion 1500hl W reg
1975 green 1500tc auto P reg
1971 wedgewood blue 2000 auto mk2 J reg
1979 Sandglow 1500HL auto V reg
1972 valencia blue Toledo 2 dr K reg
1973 Brown Toledo 2 dr L reg
1973 Green Toledo 2 dr L reg
1977 white Datsun 100a f2 S reg
1983 White Toyota Tercel 4x4
1987 Brown Toyota Tercel 4x4
1988 Blue Toyota Tercel 4x4
1999 Toyota Corolla vvti est
2005 Ford ranger thunder XLT
because one triumph just isnt enough
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David6214
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Re: Sprint Engine

#3 Post by David6214 »

Both the honey suckle one and the yellow one in the pic are no longer with us...Mart did think about the honeysuckle, but luckily did a beautiful mimosa car instead :)
Previous owner of 42 Dolomite shaped vehicles, 14 Sprints, 12 1850s, 8 1500s, 3 V8s, 3 Toledos and 2 SEs
mha447v

Re: Sprint Engine

#4 Post by mha447v »

Hello All,
Mart,don't throw that / those engines in the bin, I too have just stripped a spare sprint engine and might need a few bits. So far it needs a few valves to be ground in,a crank re-grind as it's spun number 4, and new shells, possibly 1 con rod,bores are fine,head is flat jackshaft might need another drive peg fitted (not convinced it had 2 to start with),new timing chain and sprockets and of course gaskets to suit. It's on the back burner a little at the moment as it is after all a spare. It didn't come complete so is without manifolds rocker cover and carbs etc. I've been quoted 120 quid for the re-grind which is something I'll need to do to get it back up and running. The flywheel is in work being lightened and will only cost beer to do. It's a slow time job,but I think I might do it (eventually) with a few mods,starting with the flywheel and maybe cam/carbs etc.
Regards
Jason.
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Mad Mart
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Re: Sprint Engine

#5 Post by Mad Mart »

Jason, at the mo the pistons are still not moving. I'll hopefully be able to have another bash at it tomorrow (today).

The Jackshaft only has one peg btw. I have quite a few engine spares as well.
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


2012 Porsche Boxster 981 S


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Mad Mart
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Re: Sprint Engine

#6 Post by Mad Mart »

It took a while to get the pistons out but got there eventually (whacked my thumb with the hammer whilst doing so :fuming: ).

All the bores and the pistons look in good condition & I reckon the engine had recently been fitted with new bearings before it was taken off the road (must be 14-15 years ago now). All the rings were seized in the piston grooves. I got to the third piston before I broke a ring (not that I shall be re-using them mind you).

So I just need to check the crank & hopefully it will be a goer to rebuild.


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Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


2012 Porsche Boxster 981 S


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Mad Mart
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Re: Sprint Engine

#7 Post by Mad Mart »

Crankshaft is ok. :D

One final bit to take off the block was the brass cage from the water pump, so I made up an extractor...

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A few turns of the nut & it was out and no damage to the cage at all.


I then cleaned the block up using a wire brush wheel on my leccy drill, getting rid of all remnants of gaskets & other $h1t. Then washed it over with degreasant before finally hosing it down. I just need to run a tap down all the tapped holes.

Image Image
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


2012 Porsche Boxster 981 S


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straylight

Re: Sprint Engine

#8 Post by straylight »

you make it look like fun mart :lol:

I'm looking at my son's sprint engine, which is out of the car and becoming very motivated to rebuild that.

stu
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Mad Mart
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Re: Sprint Engine

#9 Post by Mad Mart »

It is fun Stu. I love stripping & rebuilding Sprint engines. :D

Now what colour shall I paint the block?
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


2012 Porsche Boxster 981 S


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xvivalve
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Re: Sprint Engine

#10 Post by xvivalve »

Depends surely on the colour of your next project... Want a shell to go with that engine? ;-)
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Lord Tolly
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Re: Sprint Engine

#11 Post by Lord Tolly »

that tool looks just what I need to get the brass cage out of my tolly

tride slide hammer but no good.

will have to nip to b&q now for some threaded rod and find some big ol bits of metal
Round The U Bend Looking for my Camera
mha447v

Re: Sprint Engine

#12 Post by mha447v »

Hello All,
Mart,you seem to have revealed good news with regard to your crank,whereas mine needs work. That tool you've made up does look very useful for getting the brass cage out,I just wondered what it reveals. My pump is out and block in a very similar condition to yours other than the brass cage,taking brass things in and out of housings inevitably produces a bit of wear,just a thought.
Jason.
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Mad Mart
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Re: Sprint Engine

#13 Post by Mad Mart »

The large piece of metal is 40x5 flat which I had lying around. The piece that goes into the cage was a thick washer (about 2-3mm.) which I had & just cut two sides to it and made one end slightly shorter so that it would slide through the bottom of the cage. The studding I had lying in the attic. It could just as well be a large bolt.
Alun wrote:Depends surely on the colour of your next project... Want a shell to go with that engine?
Do you have any spare? :lol: No, I'm not doing another.
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


2012 Porsche Boxster 981 S


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trackerjack
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Re: Sprint Engine

#14 Post by trackerjack »

I am in the process of taking my Castle Combe cruncher out and the damage will be revealed, I reckon the mains bolts let go as maybe 7000 was a bit much :oops:
Not to worry I have another engine (well done David :bluewave: )
I will end up with plenty of useable bits though.
Shall I build it standard or tuned?
If you are short of anything give me a nudge Mart (free to you as you have money in the bank :wink: )
track action maniac.

The lunatic is out................heres Jonny!
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Mad Mart
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Re: Sprint Engine

#15 Post by Mad Mart »

Jon wrote:If you are short of anything give me a nudge Mart
I seem to be missing a crank ladder! do you have a spare? :lol:
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


2012 Porsche Boxster 981 S


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