I have found some L28 H-Beam forged rods on ebay and will ship to NZ for $600. Has anybody used these rods on there build before? I am also trying to find specs for the standardt l28et conrods specs but cant seem to track it down.
Do these specs match up?
* C2C length 130.2mm
* Big end bearing 53mm
* Small end diam 21mm
Is there any other specs i need to find out before i order these rods?
ConRod spec for L28et
Yep matches L26/28 standard rod spec. Not used standard rods length in any of the builds I have had done or seen build in the last 10 years - most go for the L24 spec rod and custom JE piston on the top - but then I am talking race engines not your normal hot road build.
Well i am glad to hear the specs are right. Is there any place in NZ that i could find some good forged dished pistons for my build??nzeder wrote:Yep matches L26/28 standard rod spec. Not used standard rods length in any of the builds I have had done or seen build in the last 10 years - most go for the L24 spec rod and custom JE piston on the top - but then I am talking race engines not your normal hot road build.
Running L24 rods would suggest that they are using the LD28 crank? I thnk ill stick to stock internal specs for this turbo build. I cant really see the point in getting any more displacement if i will be running over 1 bar of boost. I understand it will have more torque and better response but im sure i can gain that in the head that i purchased off Mike up in Auckland.
Well Tomei made pistons for L24 (Early L20a) rods on L28 cranks - I know as that is what I had in a 3.0 non stroker once 
Turbo you don't need the displacement + a larger bore = a weaker bore when turbo'd ie you don't want to run a 3.1L turbo as the walls get a bit thin and if your up the boost = split block. This is not an issue with an Atmo engine.
I know there is place that does dished pistons here in NZ however don't think they are forged slugs. see page 10 here
http://www.bowdenengineparts.co.nz/pdf/pistons.pdf
They list a 3.0mm dish L28 in .040 (40 tho) oversize for $75 each including rings so that 87mm pistons - perfect size for a rebuild
Turbo you don't need the displacement + a larger bore = a weaker bore when turbo'd ie you don't want to run a 3.1L turbo as the walls get a bit thin and if your up the boost = split block. This is not an issue with an Atmo engine.
I know there is place that does dished pistons here in NZ however don't think they are forged slugs. see page 10 here
http://www.bowdenengineparts.co.nz/pdf/pistons.pdf
They list a 3.0mm dish L28 in .040 (40 tho) oversize for $75 each including rings so that 87mm pistons - perfect size for a rebuild
Hey I don't think I would benefit much from having an extra 200cc.nzeder wrote:Well Tomei made pistons for L24 (Early L20a) rods on L28 cranks - I know as that is what I had in a 3.0 non stroker once
Turbo you don't need the displacement + a larger bore = a weaker bore when turbo'd ie you don't want to run a 3.1L turbo as the walls get a bit thin and if your up the boost = split block. This is not an issue with an Atmo engine.
I know there is place that does dished pistons here in NZ however don't think they are forged slugs. see page 10 here
http://www.bowdenengineparts.co.nz/pdf/pistons.pdf
They list a 3.0mm dish L28 in .040 (40 tho) oversize for $75 each including rings so that 87mm pistons - perfect size for a rebuild
I might have to get a hold of Chris and ask if they are forged, they don't seem to specify it but it's worth a go.
Would you recommend polishing and heat treating the crank for peace of mind? I'm just thinking of some things that I can do while I have the short block apart.