SR20DET Valve steam seals
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From: أنا لست إرهابيا
Re: SR20DET Valve steam seals
Read this: http://forums.freshalloy.com/ubbthre...&Main=67693429
Cut and paste (and edited for formatting) for the lazy.
Or just get some Tomei ones here.
Cut and paste (and edited for formatting) for the lazy.
For converting a SR20DET (JDM) engine to US Spec valve guides a couple things are needed.
Details:
Order intake and exhaust valves for a SR20DE motor (usually 0.5mm larger)
Order intake guides (bronze) for SR20DE
Order exhaust guides for a Toyota 3E motor
Order a set of valve keepers
Extra Details:
SR20DET OEM intake valve guide dimensions: OD 0.400in ID 6mm
SR20DET OEM exhaust guide dimensions: OD 0.430in ID 7mm
SR20DE USDM intake valve guide dimensions: OD 0.400in ID 6mm
SR20DE USDM exhaust valve guide dimensions: OD 0.400in ID 6mm
You must use the Toyota guides because they are 0.430in OD and 6mm ID. They will allow you to convert the SR20DET head to use parts readily available in the US. Nissan valve seals will not work in this situation because the OD's are different so you must do one of 2 things:
1: Use Toyota 3E valve seals Toyota part# (90913-02066)
2: Machine the top of the guide down to 0.400in OD so that a Nissan SR20DE valve seal will work with the conversion guides
End Result:
SR20DET head that is fully serviceable with US parts.
Details:
Order intake and exhaust valves for a SR20DE motor (usually 0.5mm larger)
Order intake guides (bronze) for SR20DE
Order exhaust guides for a Toyota 3E motor
Order a set of valve keepers
Extra Details:
SR20DET OEM intake valve guide dimensions: OD 0.400in ID 6mm
SR20DET OEM exhaust guide dimensions: OD 0.430in ID 7mm
SR20DE USDM intake valve guide dimensions: OD 0.400in ID 6mm
SR20DE USDM exhaust valve guide dimensions: OD 0.400in ID 6mm
You must use the Toyota guides because they are 0.430in OD and 6mm ID. They will allow you to convert the SR20DET head to use parts readily available in the US. Nissan valve seals will not work in this situation because the OD's are different so you must do one of 2 things:
1: Use Toyota 3E valve seals Toyota part# (90913-02066)
2: Machine the top of the guide down to 0.400in OD so that a Nissan SR20DE valve seal will work with the conversion guides
End Result:
SR20DET head that is fully serviceable with US parts.
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Administrator
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From: أنا لست إرهابيا
Re: SR20DET Valve steam seals
Originally Posted by Bonomo
what year is the toyota 3e
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Got a 1995-1996 240SX? Want a new front bumper?
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Got a 1995-1996 240SX? Want a new front bumper?
Check this out. Posting on drag first to try and avoid shipping it.
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From: أنا لست إرهابيا
Re: SR20DET Valve steam seals
Originally Posted by Bonomo
will those valve seals work with the stock sr20det valves and valve guides
Those will only work on intake side if you use DET parts.
__________________
Got a 1995-1996 240SX? Want a new front bumper?
Check this out. Posting on drag first to try and avoid shipping it.
Got a 1995-1996 240SX? Want a new front bumper?
Check this out. Posting on drag first to try and avoid shipping it.
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Joined: Feb 2003
Posts: 2,002
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From: NOVA
Re: SR20DET Valve steam seals
Originally Posted by eng
Did you read the post I made at all?
Those will only work on intake side if you use DET parts.
Those will only work on intake side if you use DET parts.
eng, I think you should stick with recommending the tomei seals. That is, unless you're prepared to spoonfeed this whole process.
