So it came to pass that i finally got the engine back ready for the rest of the season.
Put together again by NMS but now with a 360 degree thrust washer arrangement using Cosworth parts. Also the engine is now fitted with my Roller Rockers that were made for me. These needed a little adjustment at the top end but otherwise are a fit and forget instal......
IMG_0261 by Nevtiger, on Flickr
IMG_0260 by Nevtiger, on Flickr
The engine has a larger capacity sump which meant i needed to modify my cross member to give it some clearance:
IMG_0267 by Nevtiger, on Flickr
And then put it all back together again like this: (With new super sexy roller rockers)
IMG_0268 by Nevtiger, on Flickr
The engine raised pressure really quickly and i was able to bed the cam in without any issues apart from an oil leak that needed sorting out back at NMS.
Then it was time for the rolling road
IMG_0272 by Nevtiger, on Flickr
This was only slightly less stressful than when the engine let go on the rolling road a couple of years ago! First the engine was being running in and then suddenly there was a large noise from the rocker area. After much investigation and worry we found that the rockers were hitting a baffle in the cover that thad come loose!!! Phew. Then once the oil was changed to real oil and at 7600rpm the oil pressure gauge pipe failed. Oil every where including all over my lap top. Easily sorted with an external gauge to allow the mapping to be finished.
We started by using the original map for this engine but it just wanted more fuel and ignition every where - which boded well.
IMG_0278 by Nevtiger, on Flickr
So what was the outcome?
More is the answer:
IMG_0279 by Nevtiger, on Flickr
The Red trace is the final outcome and the black one is the last version of this engine. Pretty much all down to the Rockers. We ran out of time so the peak is lower than we wanted as can be seen. Although Petteri says that we may need slightly higher rated springs to pick that up. Which we will try over the winter.
Put together again by NMS but now with a 360 degree thrust washer arrangement using Cosworth parts. Also the engine is now fitted with my Roller Rockers that were made for me. These needed a little adjustment at the top end but otherwise are a fit and forget instal......
IMG_0261 by Nevtiger, on FlickrIMG_0260 by Nevtiger, on FlickrThe engine has a larger capacity sump which meant i needed to modify my cross member to give it some clearance:
IMG_0267 by Nevtiger, on FlickrAnd then put it all back together again like this: (With new super sexy roller rockers)
IMG_0268 by Nevtiger, on FlickrThe engine raised pressure really quickly and i was able to bed the cam in without any issues apart from an oil leak that needed sorting out back at NMS.
Then it was time for the rolling road
IMG_0272 by Nevtiger, on FlickrThis was only slightly less stressful than when the engine let go on the rolling road a couple of years ago! First the engine was being running in and then suddenly there was a large noise from the rocker area. After much investigation and worry we found that the rockers were hitting a baffle in the cover that thad come loose!!! Phew. Then once the oil was changed to real oil and at 7600rpm the oil pressure gauge pipe failed. Oil every where including all over my lap top. Easily sorted with an external gauge to allow the mapping to be finished.
We started by using the original map for this engine but it just wanted more fuel and ignition every where - which boded well.
IMG_0278 by Nevtiger, on FlickrSo what was the outcome?
More is the answer:
IMG_0279 by Nevtiger, on FlickrThe Red trace is the final outcome and the black one is the last version of this engine. Pretty much all down to the Rockers. We ran out of time so the peak is lower than we wanted as can be seen. Although Petteri says that we may need slightly higher rated springs to pick that up. Which we will try over the winter.
sorry for your loss, i was reading this thread with delight until i seen the last post - what happened, rod bolt? 
