CP's Trackday 1.6 on TB's re-build

[M Sutton]

Looks and sounds awesome!

[lee303]

what plugs are you running CP? they shouldn’t degrade if they aren’t being run, what heat range etc?

[Jim]

They are NGK plugs. Don't know what heat range. We think the problem might be dispack related as Will F suggested. It's going on a rolling road soon so fingers crossed its sorted and ready for another track day soon.

[burgo]

They are NGK plugs. Don't know what heat range. We think the problem might be dispack related as Will F suggested. It's going on a rolling road soon so fingers crossed its sorted and ready for another track day soon.

be sure to post when and where

[lee303]

cool, if it was me i would run NGK BCR8ES gapped to about 37 thou

[CP]

Nipped into Jamsport first thing this morning who kindly took time out to put the car their rolling road to try and work out what the problem is.

Mixed fortunes as per normal Although it got run up, Jamie wasn't happy with the suspension settings which have not been properly set and are, to say the least extreme, which were creating issues with how it behaved on the rollers so the session was abandoned.
Otherwise, in Jamies opinion, the engine needs re-mapping because the air/fuel ratio readings were all over the place. Certainly it has a massive hole in its power delivery & is not pulling cleanly through the rev range in anyway shape or form as per an engine not properly mapped. However, I'm a bit suprised and had not previously thought it to be the problem because this engine is supposed to have been mapped by SBD on an engine dyno almost no miles ago. The main problem is that not having anything to do with the creation of this engine nor knowing who built it and whether it was mapped by SBD for sure we can only go on what we find. Hopefully all it requires is a proper map and nothing else is wrong.
Anyway next job is sort the suspension out so its better behaved on the roller so Jamie can do his stuff without fearing for his life

[philip]

good luck with the mapping matey, whats the full spec btw? sorry ive not seen it in previous posts:S

[lee303]

think i’d ring SBD and see if they can shed some light on it if i were you, if its only been dyno’d i would expect the map to need a tweak once its in a car with the full exhaust ectc, but the AFR shouldn’t be 'all over the place’ really, sounds more like its on a base map

[Stuart]

Either on a base map or someone fishing for some business..... call me an old cynic

[lee303]

doesn’t sound too good in the vid, but you will get some strange AFR with a cammy engine such as this at certain points, but the main thing is it doesn’t drive right so does sound like it needs mapping tbh