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Rb30det Blown Head Gasket After 1st Run?

nizy_drftn_al_day_everyday
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nizy_drftn_al_day_everyday Apprentice

nizy_drftn_al_day_everyday

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Got my rb30det running everything was purse as . took it for a lowkey roll on 5 psi boost everything fine. Cranked it up to 10 psi was boosting like a dream then it lowkey detonated or some shit then started running like a dog . compression on all 6 cyl are 140-150. when i pulled the oil cap off theres white foamy shit underneath .I also pulled the cam covers off and theres the same stuff at the back of the head on the cams. I drained the oil out and theres no foamy shit in there. Can the compresion still be norm with a blowen head gasket. I was thinking mab its gone between a oil and water gallery. only a cheap head gasket but brand new . 1st noticed that mab it was the head gasket when i seen the moisture in my custom 600ml sprite bottle catch can.

Edited by nizy_drftn_al_day_everyday
nizy_drftn_al_day_everyday Apprentice

nizy_drftn_al_day_everyday

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What head are you using??

You do realise if it is a rb25 with VCT there is an oil gallery that needs to be plugged as it lines up with a water gallery in the rb30 block....

yea i got a non vct rb25de head out of a r32 skyline .

30ed32 Enthusiast

30ed32

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do you know the history of the block and head?? head might be warped or something may be cracked, oh but i see your compression is still pretty good.. unlikley its the gasket then

Edited by 30ed32
nizy_drftn_al_day_everyday Apprentice

nizy_drftn_al_day_everyday

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do you know the history of the block and head?? head might be warped or something may be cracked, oh but i see your compression is still pretty good.. unlikley its the gasket then

yea . I was thinking mab a cracked head but i thought that was caused through over heating . Block is just a rb30e with all standard internals thrashed daily as a single cam to i chucked my head on which i got off my mate which was mint. yea still has good compression thats what i dont get . Was thinking bot retorqueing the head . Could do with a plain probly but strait edge had no gaps

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