Mark's Nimbus 197 T Cup

[rSilva]

... Too much silicone has been used to fit the cover which is now rock hard and broken away and gone through the oil galleries and cams!
...

If it's on the feed lines for the lifters is guaranteed that the bottom end also got some. It all comes from the same supply, the oil pump.

 

[Mark_L]

Been a while since any updates on this so here's a small one.

I bought a spare engine with low compression on no. 1 cylinder. Which has now been stripped. Put through the hot wash and ultrasonic and painted.




The Block is at the machine shop and the parts to rebuild the bottom end have been ordered and got a new set of core plugs already.

The Block is getting a hone and the face checked, the crank is being polished and the head is getting a minimal skim to make sure it is flat.

So it's getting, Pec Rods and wossner 8.5:1 pistons, all new bearings thrusts, water pump cam belt kit etc.

Looking forward to driving it again.

 

[Big Ben]

Low compression pistons ready for big boost eh?!!

Super tech valves and new lifters as well Mark? Look forward to seeing it done

 

[Mark_L]

Low compression pistons ready for big boost eh?!!

Super tech valves and new lifters as well Mark? Look forward to seeing it done

Not Really Ben, just keeping it safe as the cost of the pistons is the same.

No valves at the moment. Maybe a set of catcams springs. Budget isn't allowing for too much! Getting the R26 box rebuilt too whilst I'm doing it!

 

[Mark_L]

So, the block, head and crank are ready to go.


Also the bits have just arrived!


Just waiting on the catcams valve springs.

 

[Mark_L]

So last night I made another purchase, I bought an intercooler core, so I can make my own.

The core is 24"x8"x3.5" and rated to 600bhp. So we'll see how it performs when I get the map checked.

Also have an alloy meg rad and fan pack on its way.

Lots to do.

 

[Mark_L]

So 1 step forward 2 steps backwards!

The catcams springs arrived.

Went to gap the rings and there's something wrong. The ring gaps are the wrong way around. 2nd ring has the gap I need for the top ring and vise versa.

Top ring in brown.

 

[Mark_L]

Pistons fitted to the rods

 

[VolumeX]

Wow.. some lovely parts you got there...

 

[Mark_L]

So a few more bits,

I managed to fit the crank tonight,
Still waiting on some rings which is starting to drive me mad as I'm getting impatient.

I did try an old top ring which had done over a 100k which was still tighter than the new one's. Always happens to me!!

 

[Jesse James]

Really can't wait to see this running mate. Keeps those updates coming, cause I am looking forward to seeing the old girl again

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[Mark_L]

Really can't wait to see this running mate. Keeps those updates coming, cause I am looking forward to seeing the old girl again

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Will do Jesse, had planned to when I first got it up and running but it was short lived!

 

[Jesse James]

Will do Jesse, had planned to when I first got it up and running but it was short lived!

Well best of luck and I really hope that this timw it goes well

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[Mark_L]

So tonight I lapped in all the valves, took a few hours as the exhaust ones really needed it!



I also got this today,




And my intercooler core will be with me tomorrow.

Unfortunately still no rings!! Should have them Wednesday! I hope!

 

[lewishunter98]

Creds to you for doing all of this! Would love to give it a shot myself.



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[Mark_L]

So This Arrived


Compared to std.


Can't wait to get this fabricated now.

 

[Mark_L]

Creds to you for doing all of this! Would love to give it a shot myself.



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I work on classics for a living so it's a bit different doing a later car for myself, always had turbo cars too, so it was a no brainer!

One of my current work projects.

 

[lewishunter98]

I work on classics for a living so it's a bit different doing a later car for myself, always had turbo cars too, so it was a no brainer!

One of my current work projects.
View attachment 134372

I'd be lying if I said I wasn't jealous. Looks amazing mate

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[Mark_L]

So a little update,
The Bottom end is built and the head is on. Still got to fit the cams and time it all up but it's getting there.

 

[Mark_L]

So the engine is all together and timed up.
I did forget to order a core plug which I don't remember removing?
The breather and thermostat housing have been fitted but I forgot to take a pic.