Discussion
Warren at Topcats Racing took me for a quick drive in his LS7 T350 today, I can't think of another
Word to describe it. The fact that he also races and knows how to use all that power is outstanding!
I'm tempted by his conversion. The power delivery is something the AJP just can't match.
Watch this space................
Word to describe it. The fact that he also races and knows how to use all that power is outstanding!
I'm tempted by his conversion. The power delivery is something the AJP just can't match.
Watch this space................
Jhonno said:
Out of interest, have you been in a 4.7 AJP for a more direct comparison?
Can't see there being one, best part of 500bhp and torque to steer the planet off course is no comparison.Not much price difference either between the two once you've sold your old engine and box etc.
I'd welcome opinions from those that have been in both.
The LS is everything you say and more. Blackiepaul was kind enough to let Warren give me a run in his LS Sagaris conversion and I agree it is stunning both in performance terms and in the quality of the conversion. Jaw dropping!
However the 4.7 has something that no LS conversion will ever have and that is a TVR designed engine. Obviously whether that matters is down to the individual, but for that reason alone I have no desire to ever have a TVR/Chevvy "mule". The AJP8 is the raison d'etre of the Cerbera - without it, the car is not (in my personal opinion) a Cerbera.
However the 4.7 has something that no LS conversion will ever have and that is a TVR designed engine. Obviously whether that matters is down to the individual, but for that reason alone I have no desire to ever have a TVR/Chevvy "mule". The AJP8 is the raison d'etre of the Cerbera - without it, the car is not (in my personal opinion) a Cerbera.
v8chimmy said:
Jhonno said:
Out of interest, have you been in a 4.7 AJP for a more direct comparison?
Can't see there being one, best part of 500bhp and torque to steer the planet off course is no comparison.Not much price difference either between the two once you've sold your old engine and box etc.
I'd welcome opinions from those that have been in both.
Warren used to work on my car years ago, and i saw up there some of the developments - they do know their stuff.
If my red rose engine let go, i would be straight up there dropping in one of their conversions.
They have come a long way... plus the fact they race the LS engines so have so much experience with them.
500+hp in short wheel base must be fun.
If my red rose engine let go, i would be straight up there dropping in one of their conversions.
They have come a long way... plus the fact they race the LS engines so have so much experience with them.
500+hp in short wheel base must be fun.
andrewlloyd said:
Would you put an ls engine in a Ferrari or Aston masserati lotus if the answer is no why in a tvr ? And think its ok!!
Because their all still in business and spent millions in development. All TVR designed engines are fragile, the Rover derivative being the best of the lot. You stick with dial up and I'll sign up to fibre optic.The ethos of TVR was that of producing lightweight fast stylish cars, making them faster and more reliable is hardly butchery.
ks!v8chimmy said:
The issues these engines have had speak for themselves.
Early AJPs had problem with their cranks, early speed six had the cam follower issues, all of which are now fixed. All new engines from the major producers have problems. It was the way TVR dealt with them that was the issues.Both the AJP and speed six are now very good robust engines, much better than came out of the factory.
I can't work out how people can compare an AJP with a LS engine. They are totally different. The LS needs to be considerably larger capacity to get the same power, a 6L LS1 is nearly the same as a 4.2, a 7L LS7 is about the same as a 4.7 AJP. The LS is probably a fantastic engine, built for American supercars, but that's where it should stay (with a big blower on it )
Each to their own, but I don't think a generic crate engine should go in a TVR. Lambo(VAG) or Ferrari engine maybe?
And found on Wikipedia, the LS engines have also had problems, which tbh any high performance engine will have
Problems[edit]
In the early production run of the LS-series engine, some engines encountered abnormal amounts of 'piston slap' - a problem caused by too much clearance between the cylinder bore and the piston.[12] 'Piston slap' sometimes sounds more like a knock or the sound of a diesel engine running. It is typically worse when the engine is cold and lessens as the engine reaches operating temperature. The noise of 'piston slap' often is louder when listening for it below the oil pan.
Another common problem with the 04-06 5.3L engines was cracking cylinder heads. This is commonly called the 'Castech Head' failure on the internet. GM issued a TSB on this failure to help service techs identify the problem. The head casting (which can be viewed from the passenger side of the vehicle just in front of the valve cover) was 706. Some heads with this casting number would fail, but not all of them as GM had different suppliers for the same head. The failure was due to undetected porosity around the oil drains in the head.[13]
Each to their own, but I don't think a generic crate engine should go in a TVR. Lambo(VAG) or Ferrari engine maybe?
And found on Wikipedia, the LS engines have also had problems, which tbh any high performance engine will have
Problems[edit]
In the early production run of the LS-series engine, some engines encountered abnormal amounts of 'piston slap' - a problem caused by too much clearance between the cylinder bore and the piston.[12] 'Piston slap' sometimes sounds more like a knock or the sound of a diesel engine running. It is typically worse when the engine is cold and lessens as the engine reaches operating temperature. The noise of 'piston slap' often is louder when listening for it below the oil pan.
Another common problem with the 04-06 5.3L engines was cracking cylinder heads. This is commonly called the 'Castech Head' failure on the internet. GM issued a TSB on this failure to help service techs identify the problem. The head casting (which can be viewed from the passenger side of the vehicle just in front of the valve cover) was 706. Some heads with this casting number would fail, but not all of them as GM had different suppliers for the same head. The failure was due to undetected porosity around the oil drains in the head.[13]
v8chimmy said:
robsco said:
Please don't bastardise your Cerbera with a crate engine... It's one of the nicest examples of the breed I've ever seen; it would be such a shame to see it altered.
Rob, you're not helping....................andrewlloyd said:
Would you put an ls engine in a Ferrari or Aston masserati lotus if the answer is no why in a tvr ? And think its ok!!
Look it's totally your choice and nobody can take that from you .yes the ls is a great engine but at the same or less price so is the 4.7 updated ajp with less cc and just as reliable as the ls both engines have faults .the car is the engine and the engine is the car and tvr will soon be up and running again Gassing Station | Cerbera | Top of Page | What's New | My Stuff