Not a 370z, but... VQ35HR ST (VSR) Begins

esfourteen · 10-13-2014, 09:48 PM

Quote:

Originally Posted by 1slow370

leaving that surface won't blow the engine per say it just makes the HG more likely to fail prematurely

Edit: The other companies that build these motors (GTM, IPP, Jtran) all deck the blocks to a new finish.

some machine shops will NOT deck a block unless you request it or they have to, its removing material. you do not need to deck a block to get proper head gasket seal

Nissan370 · 10-14-2014, 05:40 AM

So true on having that stuff done right. Once you get that girl back in the car and start putting the power to her. The small stuff starts to rear its ugly head.

1slow370 · 10-14-2014, 11:34 AM

Quote:

Originally Posted by esfourteen

some machine shops will NOT deck a block unless you request it or they have to, its removing material. you do not need to deck a block to get proper head gasket seal

It all depends on the head gasket and they way it was removed, and the intended use of the motor. MlS gaskets need a smooth finish to seal right, the best way to do this is to take .005-.01 off the deck just enough to cut the corrosion from the coolant and the old imbeded gasket off and ensure a flat deck, this is more important on a FI build (which is probably why the other shops that build these motors do it). If you intend to not deck the block, no power tools should be used to remove the old gasket, it should be done with a fine razor scrapper without scratching the head, and the remaining traces should be scrubbed off with a rag and gasket remover or brake cleaner. After which the block should be checked for flatness, using a scotchbrite wheel on an air grinder is going to scratch the deck and leave areas where the gasket will not seal right.

10-14-2014, 05:40 AM	#2 (permalink)
Nissan370 Enthusiast Member Join Date: Feb 2011 Location: Baltimore Posts: 431 Drives: 2009 ST BLK 370Z Rep Power: 15	So true on having that stuff done right. Once you get that girl back in the car and start putting the power to her. The small stuff starts to rear its ugly head. __________________ 370z vsr motorsports single turbo/built motor 9.1cr 525rwhp/450rwtq @ 10.5psi (stock maf maxed out)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Vq35hr 20psi stillen blower	Masterbeatty	Forced Induction	94	05-23-2014 06:18 PM
And so it begins....	osirus	Other Vehicles	11	04-03-2014 09:58 AM
GReddy High Capacity Aluminum Oil Pan VQ35HR VQ37HR USED $269 w/ FREE SHIPPING*	Sales@AAMComp	Drivetrain/Engine	12	10-30-2012 12:53 PM
And it begins	Ser_Z	New Forum Member	9	09-27-2012 04:16 PM
NEW Exedy Stage 2 Cerametalic Clutch Kit w/Chromaly Flywheel VQ35HR/VQ37	NIZMOZ	Parts for sale (Private Classifieds)	8	10-25-2009 08:49 AM