Lotus Europa Community

Lotus Europa Forums => Garage => Topic started by: califkid_66 on Wednesday,October 21, 2020, 03:46:44 AM

Title: head bolt size
Post by: califkid_66 on Wednesday,October 21, 2020, 03:46:44 AM

i need the head bolt size for crossflow i want to make the holding tool for the head gasket thanks!

Title: Re: head bolt size
Post by: jbcollier on Wednesday,October 21, 2020, 07:32:53 AM

12mm x 1.5

Here's a photo of the factory tools.  The short one is for a wedge engine and the long a crossflow.

(https://photos.smugmug.com/photos/i-w52qJGx/0/X2/i-w52qJGx-X2.jpg)

The "T" handles have left hand thread so they remove the guide as they are wound home.

Title: Re: head bolt size
Post by: jbcollier on Wednesday,October 21, 2020, 07:39:03 AM

These are not alignment tools.  They are guides to hold the gasket from moving as you lower the head.  The head is aligned by the one dowel and this special tool (for the crossflow):

(https://photos.smugmug.com/photos/i-94txPzN/0/X2/i-94txPzN-X2.jpg)

Title: Re: head bolt size
Post by: dakazman on Wednesday,October 21, 2020, 04:22:11 PM

   I’m having problems with the head bolts on my crossflow 843. Bolts are lining up with , 10m 1.5.
However one hole is stripping the  bolts.  I have an order in for a template and thread gage coming in on Monday. That will settle my problem but why would the exact come out but not go back in , fully?
   I had to order a extended tap in 10 and 12 m x 1.5 coming in from China dec 17 😭 . My 46 mm weren’t long enough to run the thread length.
   The helicoil insert came out when I removed one of the head bolts. The parts manual doesn’t help one bit with any metric bolt it seems.
Dakazman