The revival of 650143R, 1970 with TS.

[Richard48Y]

Head was already modified for the old pistons.
It may not be done in the "Standard" manner but does clear OK.
I like that the Squish is mostly intact rather than the head becoming a true Hemi.
I think Wossner actually has a conventional dome until you get to the Bump in the center.
Salv says the actual compression comes out a bit lower than their published spec.
So hopefully my 4,200'+- altitude and good gas along with my electronic ignition means I will not have issues. 

[GavinT]

Yes, and it's hard to tell how different the Wossners might be without a side by side comparison, I guess.
What is the quoted C/R of the Wossners?

Someone in the Europa world (anyone here?) had these customs pistons made by "Ross Racing Pistons" but I don't know any more than that.

[Richard48Y]

I know I bounce around a lot on task, I have to do what the budget allows for the day.
Todays minor win was to finally get the old "Firewall" remnants removed.
I had thought it was bonded in from one side or the other, but it seems to have been bonded from both sides.
Surprisingly tough where it had never been water/oil soaked.
The ragged 'Glass edges around where it had failed really annoyed me.
So I got out an air saw and trimmed them up.
Probably have to remove more but I think I want the body on the chassis for support before I do that.

[Richard48Y]

Classic cars really are getting harder to keep on the road.
I need to buy thrust washers for my Renault engine.
Never expected such a simple part to be so difficult to get. 
Seems no one in the USA has them.
Maybe the Canadian shops?

[dakazman]

 I found mine on FleeBay and waited , and waited . I know what you mean.  I consider my car a truely international car now.  The timing chain and rails are another wait.
Dakazman

[TurboFource]

I originally thought I wanted a S2 but all the Renault engine sourcing parts issues makes me glad I have a Twin Cam.

[dakazman]

I know I bounce around a lot on task, I have to do what the budget allows for the day.
Todays minor win was to finally get the old "Firewall" remnants removed.
I had thought it was bonded in from one side or the other, but it seems to have been bonded from both sides.
Surprisingly tough where it had never been water/oil soaked.
The ragged 'Glass edges around where it had failed really annoyed me.
So I got out an air saw and trimmed them up.
Probably have to remove more but I think I want the body on the chassis for support before I do that.

    You are also really getting to know how it feels to work on the car with body on.  working with the body off is much easier and less back breaking.
 I'm the opposite, now I feel the pain of working with body on. Gearbox was much easier bare frame
  Bouncing around also speeds up the small gotcha's and gives you time to work out details. details being where to work on the next set of parts and to arrange garage to better suit your needs.
Dakazman
 

[Richard48Y]

I am still happy to be on the path to the exact car I always wanted.
Renault-TS is not that hard to get parts for, just a little annoyed that the R16 was sold in the US, but thrust washers should have been ordered along with the other imported parts.
It will still have more HP than a Twink with no water pump or short valve guide woes.
It also adds Lightness over a TC.
Almost ready to take my head in for rebuild and mild porting.

[jbcollier]

Lotus TC engine vs a Renault wedge engine (stock S1/2)?  No contest, TC every time.  It makes more power out of the box and has potential for lots more.

Lotus TC vs Renault crossflow?  That’s a trickier question.  Both have similar power outputs and power potential.  Both chew through mega $$$$ above 140-ish hp.  Renault engine is lighter.  Lotus TC can be made to spin 9k ($$$$$$$ and not for long).  So, like I said, tricky.

[Kendo]

I noticed someone, Bean maybe? who sells an aluminum TC block. Would building a TC with that balance the weight differences? Askin for a friend.

[Richard48Y]

I am sure it would go a long way toward equalizing the difference, but the cost! 

[Kendo]

Yes. It’s just “win the lottery” thinking. I’m thinking more realistically of sprint cams and Mikunis. But I still have a car to paint and get back together.

Watching you work out a good “recipe” for your engine has been interesting. I was sorry to see the beehive springs didn’t work out. They looked interesting. Good luck with the rest of it.

[GavinT]

Surprisingly tough where it had never been water/oil soaked.
The ragged 'Glass edges around where it had failed really annoyed me.

Yeah, we sling off at this 50 year old 'fibreboard' but if it had been properly sealed at the factory, I reckon it'd probably go for 100 years!

Probably have to remove more but I think I want the body on the chassis for support before I do that.

Reckon that's a good idea.
Most folk replace the firewall with something much more rigid so it occurs to me that the 'weaker' fibreboard would likely be more accomodating of a mis-positioning stuff up.

[GavinT]

The old chestnut.
Here in Oz, we didn't get any TC/TCS's via the local Lotus concessionaires at the time. We may have received a couple of S1's but mostly they were UK spec S2's (and a couple of 47's).

As such, all ours came with the 1470cc engine which was already going out of fashion by the time Renault sold them to Chapman.
We also had a Renault assembly plant so it's not surprising to find that most S2's have already graduated to crossflow engines.

Anyway, you could compare a TC vs Renault crossflow, but then you'd need recognise that a TC is essentially just waiting around for a Zetec transplant.

[TurboFource]

Gavin,
"you'd need recognize that a TC is essentially just waiting around for a Zetec transplant", this has crossed my mind...
We will see what the future holds. And I hopefully haven't upset anyone with a Renault engine as I think all the Europas are great!!