Hello fellow TBs!!!
I seek your collective wisdom with some difficult questions that have been keeping me up at nights lately.
The setup is as follows:
Stock b230fk bottom + b234 head using all Yoshifab stuff for the 16v conversion. Including a set of uprated valve springs and ARP head studs. HG is stock Elring at this time.
The air comes from a 500hp rated BorgWarner EFR-6758-0.64-WG turbo through a big intercooler I got from here:
https://www.classicswede.co.uk/740940_turbo_intercooler_with_AC/p1733344_16513751.aspx
The fuel comes from a 255lph walbro (probably a knock-off but works flawlessly thus far) through a decent adjustable FPR and a set of 80lb/h Siemens Deka's.
All this is orchestrated by Vems ECU with 4*EGTs, 4*R8 coils on plug, oil and fuel pressure monitoring, and more.
I really want to harness the full potential of that turbo.
The stock bottom end being the elephant in the room. So, my question is - do I only upgrade the conrods? Or also go for forged pistons? And should I opt for main studs or stay with the bolts (new stock)?
Paraphrasing with some numbers and options:
Should I just source a set of maxpeeding rods with ARP bolts for 250usd shipped?
Or, do I need to go for a forged piston/rod set, which I can source from Yoshifab for 1,180usd shipped? Not to mention I'd be getting myself into machining a block for the oversize pistons.
P.S.: just to get this out of the way - I'm probably going to upgrade that fuel pump and will definitely get a decent tubular exhaust manifold and intake manifold (both of which are stock at the time).
The car, 1998 945, is not a DD but also not a beater/missile. It will drive itself to drift events and training sessions as well as the occasional Volvo meets and trips with fellow enthusiasts. Or just a weekend drive looking to troll some VAGs and Civics. It has an AC and a heater, and so it shell remain .
It was a bit long, thank you for bearing with me.
Cheers!!
I seek your collective wisdom with some difficult questions that have been keeping me up at nights lately.
The setup is as follows:
Stock b230fk bottom + b234 head using all Yoshifab stuff for the 16v conversion. Including a set of uprated valve springs and ARP head studs. HG is stock Elring at this time.
The air comes from a 500hp rated BorgWarner EFR-6758-0.64-WG turbo through a big intercooler I got from here:
https://www.classicswede.co.uk/740940_turbo_intercooler_with_AC/p1733344_16513751.aspx
The fuel comes from a 255lph walbro (probably a knock-off but works flawlessly thus far) through a decent adjustable FPR and a set of 80lb/h Siemens Deka's.
All this is orchestrated by Vems ECU with 4*EGTs, 4*R8 coils on plug, oil and fuel pressure monitoring, and more.
I really want to harness the full potential of that turbo.
The stock bottom end being the elephant in the room. So, my question is - do I only upgrade the conrods? Or also go for forged pistons? And should I opt for main studs or stay with the bolts (new stock)?
Paraphrasing with some numbers and options:
Should I just source a set of maxpeeding rods with ARP bolts for 250usd shipped?
Or, do I need to go for a forged piston/rod set, which I can source from Yoshifab for 1,180usd shipped? Not to mention I'd be getting myself into machining a block for the oversize pistons.
P.S.: just to get this out of the way - I'm probably going to upgrade that fuel pump and will definitely get a decent tubular exhaust manifold and intake manifold (both of which are stock at the time).
The car, 1998 945, is not a DD but also not a beater/missile. It will drive itself to drift events and training sessions as well as the occasional Volvo meets and trips with fellow enthusiasts. Or just a weekend drive looking to troll some VAGs and Civics. It has an AC and a heater, and so it shell remain .
It was a bit long, thank you for bearing with me.
Cheers!!