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Alistair Enser

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Alistair Enser last won the day on May 27

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About Alistair Enser

  • Birthday January 17

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  • Name
    Alistair Enser
  • Car
    Lotus Esprit S2 1980
  • Location
    Surrey

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  1. Thanks Steve. That’s what I will do. Have already rebuilt the head completely, so bottom it is. It probably explains why it was in a barn and off the road since 1990 . On a positive , I will have pretty much a brand new engine .
  2. OK, so leak down test showed poor results on cylinder 3 leaking into crank case. 30% loss which gets worse if warm. I have stripped the engine and the rings need doing, but also the bore is 7thousands out of round. What is the tolerance for the liners before I replace ?? Does anyone know thanks ALi
  3. Thanks for that . I will double check .I'd assume if the problem occurs when hot that valve clearance would be an issue if shim too big and clearance too small ie valve then not closing properly . Or can clearances which shrink with heat just be a problem for compression ? I will check this week if the compression has returned now the engine is cold again ( ran out of time to retest ) Btw - same colour scheme as yours ( photo before restoration ) .
  4. Valves all true when removed and re-lapped in . It was doing exactly the same before I disassembled. I did a cold check on the valve movement in the guide and it didn't seem 'sticky' but doesn't mean it couldn't be an issue when hot - I suppose. Head gasket could of course be a potential issue, but there doesn't appear to be any pressurisation or bubbles in the water system and the coolant stays quite cool ( I'd expect it to get hot very quickly if the gasket were leaking ) Oil pressure seems ok and not varying wildly - if I was getting blow-by on pistons would the increased crank pressure cause the pressure gauge to move ( I'm getting a very constant 50).
  5. I'm currently restoring 837G which has been unused since 1990 . Chassis, body , all suspension , bushes , gearbox are now all pristine as I've sandblasted, powder coated the chassis and spent a small fortune at SJ's, plus a body off respray . The original interior is pretty good ( just a few trim bits to complete ) and so my attention turned to the engine. I have had the head off , 5thou skimmed and all the valves ( which were very clean ) lapped in. I didn't dismantle the bottom end, but the pistons looked very clean, as did the bores with no perceivable ridge at the top. I dropped some oil in the bores and 24hrs later when I went to reassemble it had not leaked past the rings . On reassembly valve shims and clearances have been checked and the engine starts fine . However, after running for about 5minutes it develops a misfire and the cylinders lose compression. Hot compression test- 1,2,4 drop slightly to about 9 and cylinder 3 drops to 5 . Any ideas ? I'm guessing this could be sticky valve guide ?( I didn't change these ) , bad/stuck rings or perhaps a crack in the cylinder sleeve that I didnt see. Any advice would be greatly appreciated
  6. Shims !! So, Latest on 837G . I have decided to strip the top end and inspect properly . There were signs of potential Head Gasket failure . The head has been skimmed 5thou and the valves cleaned and lapped in ( seats were good ) . New core plugs too. Having completed the build I had a dilemma . My car had gasket fitted between the cam tower and head even though my engine number says it should just be sealant . Having orders gasket form SJ so I could measure valve clearances with and without the gasket it seems that my shims are definitely out . On the inlet dry fit & no gasket I get clearances of zero through to 0.003". With gasket they are 0.01- 0.013" Exhaust are somewhere in excess of 0.02" Measuring my shims themselves I noticed that the intake ones are in the range of 4.15mm where as the exhaust ones are all aroundn3.5mm is this normal If I go without the gasket and use loctite.or similar all my.shims are too big . Does anyone have access to a selection I could trail ? Thanks
  7. Hi - thanks for that . I have read those threads before ( oil seals) - but appreciate you pointing it out . My intention would be to keep the current distributor which appears to be 'oil free' and just upgrade the points inside to electronic . That way I keep the integrity
  8. Excellent Thanks - I was also looking at the various electronic ignition retro fits . Seems like there are a lot to choose from, but seems like a good idea and invisible from the outside Sounds like one to research . Appreciate the pointers . ( No pun intended 🤣)
  9. Thanks - I was also looking at the various electronic ignition retro fits . Seems like there are a lot to choose from, but seems like a good idea and invisible from the outside
  10. Well - we I have teat run the engine today - and it seems good with good compressions no smoke etc . One thing which has been bugging me since I got the car . The distributor is clearly new ( at least not original ). It works fine but does not have any vacuum advance . Is that correct for the S2? Thanks
  11. Today the bodyshell came back from paint. It looks very nice . Certainly a million miles from the bubbled mess that went in . Thanks to Stuart, Rusty and the team and Alto in Hartley Witney. Not a big outfit but historical experience working at TVR and McLaren meant they understand GRP and Composite Now for lots of rebuilding Happy Father's Day -My boys got me a replica to copy on my rebuild
  12. Today the bodyshell came back from paint. It looks very nice . Certainly a million miles from the bubbled mess that went in . Thanks to Stuart, Rusty and the team and Alto in Hartley Witney. Not a big outfit but historical experience working at TVR and McLaren meant they understand GRP and Composite Now for lots of rebuilding
  13. Well, having fitted the steering rack today and the brake lines I came across a ‘deliberate’ error on my part! Apparently if you fit the anti roll bar upside down it fits nicely……but the steering rack does not - especially the track rod ends which then won’t connect to the hubs. All sorted now thanks to searching for a photo on the internet of the correct setup. Happy Bank Holiday and Jubilee.
  14. Thanks - I just read through your restoration too. Amazing attention to detail . Thanks for the help
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