Page 2 of 2 FirstFirst 12
Results 21 to 25 of 25

Thread: Low/no compression on rebuilt engine

  1. #21
    Guest
    Join Date
    Mar 2004
    Location
    Helston, West Cornwall
    Posts
    24,290
    Rides
    0
    There was a case of an S13 being built without the washers on the head bolts. Is it possible that the same is true for an SR20 ? I've never had one apart so don't even know if they have a washer.

  2. #22
    Guest
    Join Date
    May 2019
    Location
    Corby
    Posts
    27
    Rides
    0
    I have no washers on my headbolts, but would have thought they would come with the headbolts when you buy them if this was the case. But it would be interesting to know

  3. #23
    Guest ANDY black s13's Avatar
    Join Date
    Nov 2008
    Location
    erith kent england
    Posts
    6,350
    Rides
    0
    Quote Originally Posted by bahis View Post
    Or valves can be machined to same height, then you can use the original shims that are all the same thickness. (At least mine were)
    that would remove any case hardening surface treatment from the stem tip and potential it will wear faster and clearance increases/valve train gets noisy
    that's why they have shims to set them to correct height with no stem machining,not saying it's wrong but it's not the way I set them up

  4. #24
    Guest
    Join Date
    Jan 2012
    Location
    Kent
    Posts
    1,877
    Rides
    0
    Standard SR20 headbolts do have washers! I must say, I'm not sure I'd trust the rest of the engine this guy has put together, and I'd be getting a proper builder to check clearances etc. and reassemble!
    Last edited by Slamz; 21-06-2019 at 19:43.

  5. #25
    Guest
    Join Date
    Mar 2004
    Location
    Helston, West Cornwall
    Posts
    24,290
    Rides
    0
    If you miss out the washers, the bolts bottom out in the threads before the head is tightly clamped down meaning they get torqued but you don't get a good seal and you do get low compression across all cylinders.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •