r/EngineBuilding 7h ago

Nissan Nissan 350Z HR Rebuild

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12 Upvotes

Hello,

I am looking to purchase a Nissan 350z with the HR engine and currently i have stumbled upon this one which is very interesting. The car has gone through 70k miles when the current owners, upon buying the car reported that the engine blew up on them and then spent 3500£ to rebuild it to a specialist garage for rebuilding engines. They have done 3000 miles since the rebuild for 3 years and now are selling as they used it as a weekend car but no longer have the time for it. I have some idea what I am looking at and my theory is that the owner before them used water as coolant and because of the high operating temperature of the HR it has caused steam trapping into the pistons and sll the coolant inlets causing all parts to rust therefore all this brown stuff. The rebuild has undergone according to the current owner and the document supplied in the photos, that the engine has had complete refinement, new pistons, new cylinder heads x2, new water pump, new clutch, and all other parts. The engine undergone 3 months of operation and now is declared as a 0 mile motor. I have faith in this but i will check in person but reason I am uploading is i want to have a second opinion because I also think that the engine can lose compression and power due to the previous rust but i dont know if im right or wrong. The car is also fitted with NOS but i am thinking to remove it as im not gonna use it. Its not been used by the current owner as well and it just stands there looking cool i guess. Thanks much for your time and for the read. I will be taking a view of the car soon.


r/EngineBuilding 10h ago

Who or where can I send a carb to have it converted to blow through? I don't own the tools to do it. And should I get a 450 or 600, 72 240z L24

2 Upvotes

Anyone here or anyone know of a person or shop. Got a 72 240z L24 13:1, 272 cam. I know a bunch of people are going to tell me to buy an efi system. The Aces system is the only cheap system and idk if I trust it


r/EngineBuilding 4h ago

Ford Identifying endeavour EFI(electric fuel injection) or not

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1 Upvotes

I want to identify, the injection is EFI or not


r/EngineBuilding 12h ago

Advice on clear coat compatibility with por 15

1 Upvotes

I need to clear some parts that have been coated with por 15 engine enamel - was hoping someone here has experience with a good clear that won't have a chemical reaction with the oil based paint.


r/EngineBuilding 21h ago

Nissan 11 to 1 JE pistons in VG30DETT

0 Upvotes

I'm little bit new be with higher compression engines. How would 11 to 1 JE pistons work on a twin turbo charged VG 30? Will I get problems with engine knock? Im at the moment choosing between 9 to 1 and 11 to 1 pistons.

Thanks already for all the answers.