Innovative Engine Mount Question
Thread Starter
Registered User
Joined: Mar 2013
Posts: 3,130
Likes: 4
From: Cirencester
Right,
I am home from work and I have removed 2 bolts, one from either side.
Passenger side bolt:
No oil on it, used a cotton bud in the hole, no oil on it. everything is clean.
Some pics of the Passenger side (UK spec)
Couldnt get any pictures of the driver side hole (UK spec)
Drivers side bolt
No oil on it, no oil in the hole. all clean.
Am I lucky?
Any thoughts?
I am home from work and I have removed 2 bolts, one from either side.
Passenger side bolt:
No oil on it, used a cotton bud in the hole, no oil on it. everything is clean.
Some pics of the Passenger side (UK spec)
Couldnt get any pictures of the driver side hole (UK spec)
Drivers side bolt
No oil on it, no oil in the hole. all clean.
Am I lucky?
Any thoughts?
Joined: Sep 2008
Posts: 3,730
Likes: 56
That looks to be 40mm to me and after reading that horror story of a thread, 40mm is bad news. Based on that thread I would say it is not possible to torque that bolt to spec and not go beyond the depth of the casting hole.
Joined: Sep 2008
Posts: 3,730
Likes: 56
I would measure the thickness of the mount, then the depth of the hole and do the math to confirm. If the math does not work in your favor drop the oil pan and investigate, at least at this point it may just be a matter of repairing the damage to the casting.
Thread Starter
Registered User
Joined: Mar 2013
Posts: 3,130
Likes: 4
From: Cirencester
Overall depth of hole and thickness is 45mm either side.
Billet mounts are 13 to 15mm thick (hard to see with my tape in the dark. No more than 15 im 1 million percent sure. So 30mm hole for bolt on blck.
This is a 5mm allowance even with bolts in if the 40mm bolts are used.
Billet mounts are 13 to 15mm thick (hard to see with my tape in the dark. No more than 15 im 1 million percent sure. So 30mm hole for bolt on blck.
This is a 5mm allowance even with bolts in if the 40mm bolts are used.
Joined: Apr 2011
Posts: 3,643
Likes: 7
From: Florida
However, billman is saying the holes are 30-32mm. Unless thats what you were saying I was a bit confused reading that last post.
All holes in the engine, left and right side, are APPROXIMATELY the same depth at around 30-32mm. For safety , no bolt should extend into the block over 28mm.
-The stock right side mount is 18mm thick. It uses 40mm bolts, leaving 22mm extending into the block...safe.
-the stock left side mount is 13mm thick. It uses 35mm bolts, leaving 22mm extending into the block...safe.
-IF YOU MIX UP OEM BOLTS ON STOCK MOUNTS...one side will have 27mm extension into the block. CLOSE, but safe. One side will have 17mm extension into the block. Very safe as far as bottoming out, but not enough bolt grab, and small chance for stripping.
-This means there is ZERO tolerance with a thinner mount, which innovative is bay far. Switching the 40mm bolts with the 35mm bolts will cause bottoming out. you likely have other hidden damage.
All holes in the engine, left and right side, are APPROXIMATELY the same depth at around 30-32mm. For safety , no bolt should extend into the block over 28mm.
-The stock right side mount is 18mm thick. It uses 40mm bolts, leaving 22mm extending into the block...safe.
-the stock left side mount is 13mm thick. It uses 35mm bolts, leaving 22mm extending into the block...safe.
-IF YOU MIX UP OEM BOLTS ON STOCK MOUNTS...one side will have 27mm extension into the block. CLOSE, but safe. One side will have 17mm extension into the block. Very safe as far as bottoming out, but not enough bolt grab, and small chance for stripping.
-This means there is ZERO tolerance with a thinner mount, which innovative is bay far. Switching the 40mm bolts with the 35mm bolts will cause bottoming out. you likely have other hidden damage.
Joined: Sep 2012
Posts: 3,299
Likes: 212
From: Greenwood, AR
What I found when installing the Innovative billet mounts.
- Mount flanges to engine are thicker than the steel.
- Driver's side was the same thickness as the billet mount. I used OEM bolts and no washers.
- Passenger side required washers to use OEM bolts.
If I bought some OEM driver-side bolts, I could likely use those on the passenger side without washers.
https://www.s2ki.com/s2000/topic/107...e/page__st__50
- Mount flanges to engine are thicker than the steel.
- Driver's side was the same thickness as the billet mount. I used OEM bolts and no washers.
- Passenger side required washers to use OEM bolts.
If I bought some OEM driver-side bolts, I could likely use those on the passenger side without washers.
https://www.s2ki.com/s2000/topic/107...e/page__st__50
Joined: Sep 2008
Posts: 3,730
Likes: 56
Plus I would imagine the bottom of the hole is U-shape, so the pressure exerted on the edges and by cutting threads past the threaded portion could be problematic. The thing is, I doubt the OP of that old thread would have seen oil on the bolt or in the hole prior to the casing breaking away, even afterwards, maybe a light film would be present, but I bet it would be hard to pickup on. If it were close I think I would want to take a look from the backside, just me though.
Thread Starter
Registered User
Joined: Mar 2013
Posts: 3,130
Likes: 4
From: Cirencester
Just to clarify. With the billet mount flush to the motor the depth from the outer edge of mount to the inner part of the bolt hole on the block is 45mm
The bolts are 40mm long thread wise which means when they are inserted and right there is a remaining 5mm before the bolt end touches the block.
As I never torqued them down the bolts never touched the inner block.
I have a feeling my motor is ok.
The bolts are 40mm long thread wise which means when they are inserted and right there is a remaining 5mm before the bolt end touches the block.
As I never torqued them down the bolts never touched the inner block.
I have a feeling my motor is ok.