HEXEM
Member
Hi everyone,
This question is targeted primarly at those who have done work on the new L77 engine being installed in the Series 2 V8 commodores. But happy for others to comment.
First of all, I have a 2007 SSV Auto rock stock. It came from the factory with an L98.
n the last 2 years I have had 3 engines (L98's) replaced under warranty because of excessive cold start engine knock (possibly valve train related).
In November 2010 the new engine (No.3) was installed and lasted 8,000klm before it too started knockin its head off. Holden have inspected the car last month and have been advised by Holden TAC to replace the motor with the latest model (L77).
Today I received a phone call from Holden that an L77 will be supplied and fitted to my car. But before they can install the engine they need to change the camshaft in the L77 with the L98 camshaft from my current motor.
It was explained that the Holden engineers said that it has to be changed because its an AFM camshaft and needs to be changed to a non-AFM camshaft. They also need to change some seals under the valley plate or something.
This just doesn't seem right to me as the L77 service both AFM and non-AFM variants of the series 2 commodore.
Its also my understanding the the L77 STILL uses a mix of AFM and non-AFM lifters. If this is the case wouldn't an L98 camshaft lobes cause issues where the AFM lifters are located (which have a different size pushrod to the non-AFM lifter?)
1. Could anyone confirm that the L77 still uses 2 different lifters (AFM and Non) and that installing an L98 camshaft in the L77 is likely to cause major issue with excessive lift etc?
2. Why would they have said to install an L98 camshaft because the camshaft in it is an AFM one? As my ECM does not have AFM activated in the software it shouldn't matter what camshaft is in it?
3. Can this motor (L77 factory spec) be installed without the need to change anything?
Holden has said they will install the motor as is however I would be made to sign an indemnity form which states that if there motor fails its on me.
Appreciate the feedback.
Cheers
Phil
P.S. If people do not want to post advice on the forum please send a PM.
This question is targeted primarly at those who have done work on the new L77 engine being installed in the Series 2 V8 commodores. But happy for others to comment.
First of all, I have a 2007 SSV Auto rock stock. It came from the factory with an L98.
n the last 2 years I have had 3 engines (L98's) replaced under warranty because of excessive cold start engine knock (possibly valve train related).
In November 2010 the new engine (No.3) was installed and lasted 8,000klm before it too started knockin its head off. Holden have inspected the car last month and have been advised by Holden TAC to replace the motor with the latest model (L77).
Today I received a phone call from Holden that an L77 will be supplied and fitted to my car. But before they can install the engine they need to change the camshaft in the L77 with the L98 camshaft from my current motor.
It was explained that the Holden engineers said that it has to be changed because its an AFM camshaft and needs to be changed to a non-AFM camshaft. They also need to change some seals under the valley plate or something.
This just doesn't seem right to me as the L77 service both AFM and non-AFM variants of the series 2 commodore.
Its also my understanding the the L77 STILL uses a mix of AFM and non-AFM lifters. If this is the case wouldn't an L98 camshaft lobes cause issues where the AFM lifters are located (which have a different size pushrod to the non-AFM lifter?)
1. Could anyone confirm that the L77 still uses 2 different lifters (AFM and Non) and that installing an L98 camshaft in the L77 is likely to cause major issue with excessive lift etc?
2. Why would they have said to install an L98 camshaft because the camshaft in it is an AFM one? As my ECM does not have AFM activated in the software it shouldn't matter what camshaft is in it?
3. Can this motor (L77 factory spec) be installed without the need to change anything?
Holden has said they will install the motor as is however I would be made to sign an indemnity form which states that if there motor fails its on me.
Appreciate the feedback.
Cheers
Phil
P.S. If people do not want to post advice on the forum please send a PM.
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