Cerbera Engines
Discussion
KenOnTour said:
How many engines have TVR used in their Cerbera design?
I have seen Speed 6, Speed 8, V8 (or is this the S8?)
Red Rose, 4.2, 4.5 etc
Can anyone tell me what has been used, when and in what?
Thank you
Two basic engine designs:
Speed 6 (6 cylinder)
AJP (8 cylinder)
The Speed 6 is a 4.0 in the Cerbera, and the V8 is either a 4.2 or a 4.5. The "Red Rose" version is a bunch of modifications to the 4.5 (not just engine mods). The car started out with the 4.2 V8 ('96), with the 4.5 coming along in '97, if memory serves me (I'm sure someone'll correct me on that). The Speed 6 was introduced later ('99).
This is where things get a bit pedantic.
There are also 4.7Ltr versions of the AJPV8 one was for sale on this very site not so long ago. Plus the mother of all cerberas the speed twelve, which of course has a V12, again this was recently for sale at Racing green. Not to many of these versions around though, so don't know how relevant it is to the arguement.
There are also 4.7Ltr versions of the AJPV8 one was for sale on this very site not so long ago. Plus the mother of all cerberas the speed twelve, which of course has a V12, again this was recently for sale at Racing green. Not to many of these versions around though, so don't know how relevant it is to the arguement.
tvrslag said:
This is where things get a bit pedantic.
There are also 4.7Ltr versions of the AJPV8 one was for sale on this very site not so long ago. Plus the mother of all cerberas the speed twelve, which of course has a V12, again this was recently for sale at Racing green. Not to many of these versions around though, so don't know how relevant it is to the arguement.
I was going to mention these, but they're not really "production" models. As far as I'm aware, there were only 2 of the 4.7s, and wasn't the Speed 12 at Racing Green either missing an engine or not actually for sale?
Whilst being pedantic, I'm sure I read somewhere that there's a company upgrading 4.2s and 4.5s into 5.0s for anyone willing to pay. Not heard of anyone doing this yet, so I might have been (day)dreaming.
FourWheelDrift said:
I always used to see an advert in Sprint offering supercharging, but I've never known or heard of anyone doing it.
Haven't joined the TVR CC , so no back issues of Sprint to check through... anyone got any details on this - telephone number, whether it's valid for any AJP engine, costs, etc? Along with a 6 speed (manual) gearbox, this is top of my wish list.
Cheers,
-James
Ways of improving AJP V8 engine performance has been discussed on many occaisions on this forum.
The summary is as follows.
There has been at least one abortive attempt at some free flowing exhaust manifolds, but the limited space due to the chassis stopped this very early. As such I think any turbo charging effort would also fall at this first hurdle unless someone can come up with a suitable casting for a manifold that allows space for the turbos.
On the supercharging front this is also difficult as the timing and drive sprockets on the engine are all hidden by a cover. As such there is no where to couple drive from the engine to the supercharger, not unless someone can come up with a unique way of utilising the alternator drive belt inbetween the cylinder banks.
The best route for extra oomph is NOS. There is at least one Cerb I have seen (maybe Gcerbera can shed some extra light here) that has Nos fitted.
Gas flowing and head porting is basically the 4.5 red rose conversion (in many cases this only brings the BHP upto what it should have been?!) and to my limited knowledge not offered on the 4.2. The twin valves per cylinder arrangement limits this enhancement though.
You could increase the engine displcement upto 4.7ltr which has been done but I'm sure the difference would be negligable to most of us mere mortal drivers.
Finally there is some ECU work that can be done, but as yet nobody has an ECU that ofers mega BHP increases, most changes are to improve fueling, and emissions etc.
One thought process is to change the shocks (Nitron, Bilstein to name a few) and brakes (please god get rid of that squeal
), this at least makes the (awesome) performance more accessible.
I'm sure somebody will come along and correct some of my incoherent ramblings, but thats my take on the situation.
The summary is as follows.
There has been at least one abortive attempt at some free flowing exhaust manifolds, but the limited space due to the chassis stopped this very early. As such I think any turbo charging effort would also fall at this first hurdle unless someone can come up with a suitable casting for a manifold that allows space for the turbos.
On the supercharging front this is also difficult as the timing and drive sprockets on the engine are all hidden by a cover. As such there is no where to couple drive from the engine to the supercharger, not unless someone can come up with a unique way of utilising the alternator drive belt inbetween the cylinder banks.
The best route for extra oomph is NOS. There is at least one Cerb I have seen (maybe Gcerbera can shed some extra light here) that has Nos fitted.
Gas flowing and head porting is basically the 4.5 red rose conversion (in many cases this only brings the BHP upto what it should have been?!) and to my limited knowledge not offered on the 4.2. The twin valves per cylinder arrangement limits this enhancement though.
You could increase the engine displcement upto 4.7ltr which has been done but I'm sure the difference would be negligable to most of us mere mortal drivers.
Finally there is some ECU work that can be done, but as yet nobody has an ECU that ofers mega BHP increases, most changes are to improve fueling, and emissions etc.
One thought process is to change the shocks (Nitron, Bilstein to name a few) and brakes (please god get rid of that squeal
), this at least makes the (awesome) performance more accessible. I'm sure somebody will come along and correct some of my incoherent ramblings, but thats my take on the situation.
tvrslag said:Indeed I can, or rather follow this link!
The best route for extra oomph is NOS. There is at least one Cerb I have seen (maybe Gcerbera can shed some extra light here) that has Nos fitted
www.pistonheads.com/gassing/topic.asp?t=47950&f=6&h=0&hw=mania
Go create some weather...
Graham
TCR The Cerbera Register
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