Chimaera 450 SC Problem
Discussion
Hi All, I'm almost at the end of a very long and extensive build. Last week we took it to a rolling road for final set up and a power run and were rewarded with very disappointing results. I wondered if anyone had any thoughts as to what could be the problem/s that we are experiencing? Firstly I'll give a very basic overview of the work carried out. We fitted an SC Power 500 Supercharger kit with C38-91 Blower Upgrade, I also spec'd a 20% larger Intercooler. The engine had a full tear down and was rebuilt using all new and upgraded parts including V8 Developement BV Heads, 45mm inlet manifold with a ported trumpet base and flared trumpets, Bosch injectors and an 044 fuel pump. It's running an Omex 710 ECU and coilpacks and has Zircotec coated decat manifolds.
The problem, and it is kind of a major one, is that we are only getting 0.6PSI at the plenum. We can't find any restrictions in the pipework and even went as far as re routing the K&N but nothing has made a difference. Aside from the lack of boost the engine is running beautifully.
If anyone out there can offer any advice as to why this might be it would be very much appreciated. Having missed all of last Summer, I am determined to get back on the road before this Summer is over and am now at the point where I wish I hadn't started this project as the car was previously nigh on perfect. Ho hum, best laid plans and all that!
The problem, and it is kind of a major one, is that we are only getting 0.6PSI at the plenum. We can't find any restrictions in the pipework and even went as far as re routing the K&N but nothing has made a difference. Aside from the lack of boost the engine is running beautifully.
If anyone out there can offer any advice as to why this might be it would be very much appreciated. Having missed all of last Summer, I am determined to get back on the road before this Summer is over and am now at the point where I wish I hadn't started this project as the car was previously nigh on perfect. Ho hum, best laid plans and all that!
Edited by maxxander on Wednesday 30th April 14:51
Check the supercharger is getting a proper supply of traction oil - if it does not have enough oil, it will not produce boost. If it is getting oil then check your re-circ valve spring. If it is giving out too early then it will dump boost back to the charger plenum. Lovely looking build though by the way - you've got almost exactly the same spec engine as mine (even the same colour car!)
450Nick said:
Check the supercharger is getting a proper supply of traction oil - if it does not have enough oil, it will not produce boost. If it is getting oil then check your re-circ valve spring. If it is giving out too early then it will dump boost back to the charger plenum. Lovely looking build though by the way - you've got almost exactly the same spec engine as mine (even the same colour car!)
What is the colour ?BarnFind said:
450Nick said:
Check the supercharger is getting a proper supply of traction oil - if it does not have enough oil, it will not produce boost. If it is getting oil then check your re-circ valve spring. If it is giving out too early then it will dump boost back to the charger plenum. Lovely looking build though by the way - you've got almost exactly the same spec engine as mine (even the same colour car!)
What is the colour ?mark
chris watton said:
I cannot help or give advice - but just wanted to add that those pictures are pure TVR porn! Astounding work and attention to detail!
Hope it gets sorted PDQ!
Thanks for the positive comments, I'm hoping it will drive as well as it looks once we've sorted the problem.Hope it gets sorted PDQ!
450Nick said:
Check the supercharger is getting a proper supply of traction oil - if it does not have enough oil, it will not produce boost. If it is getting oil then check your re-circ valve spring. If it is giving out too early then it will dump boost back to the charger plenum. Lovely looking build though by the way - you've got almost exactly the same spec engine as mine (even the same colour car!)
Hi Nick, just checked your profile and they are virtually identical but don't worry I haven't pinched yours, mines in Rolex Blue (purple). By the way, love your car. In answer to your questions, traction oil was pressurised to 15PSI and levels checked pre start and after running up - all seems good on that front. Your concerns about the re-circ valve are definitely worth checking out.macdeb said:
Have the suppliers of the supercharger any idea?
Looks fantastic by the way, I like this stuff [but beware that the manifolds wont look that good for long, and who did them will not give a st, I know!]
So far the only comment is that they have supplied 80 plus so far and haven't had a problem and that it must be an installation error. Time will tell! Looks fantastic by the way, I like this stuff [but beware that the manifolds wont look that good for long, and who did them will not give a st, I know!]
maxxander said:
BarnFind said:
What is the colour ?
It's Rolex Blue or probably a better name would have been Cadbury's Purple.Gassing Station | Chimaera | Top of Page | What's New | My Stuff