Compression ratio on a B16

jazz · 03-04-2010, 09:07 AM

Hey guys,

I have a question about the compression ratio on a B16A2 when swaping the OEM head gasket (1,2mm) to an aftermarket Buddy Club one (0,4mm). Would the height change affect the timing and ignition that much that it needs to be changed/adjusted? Browsing around showed me that the ratio diffrence would be +0.4/5. Also, the biggest concern is the piston to valve clearance ...

Any thoughts?

Thanks,
J.

Rich777 · 03-04-2010, 11:35 AM

Why do you want to change the head gasket ? Whats wrong with Honda OEM ?

civic4g · 03-04-2010, 11:53 AM

OEM headgasket 1,2mm thick? is that a joke?

tama666 · 03-04-2010, 02:34 PM

Quote:

Originally Posted by civic4g

OEM headgasket 1,2mm thick? is that a joke?

I think its just a typo.

jazz · 03-04-2010, 03:30 PM

Thanks for the replys.
The head gasket leaks and needs to be replaced. Why not OEM? Just got it cheaper compared to the original one.

1,2mm was a random guess. As a single layer gasket was 0,4, so thought OEM 3-layer one should be 3 times as thick. Google didnt help much, so sorry for the lack of knowledge

civic4g · 03-04-2010, 04:19 PM

OEM headgasket is around 0.7mm, so a drop in thickness of 0.3mm will have very small impact on cam timing.

The rule for B-series is:
For every 0.012'' of material removal, cam timing gets retarded by 1 crank degree (half degree measured at the cams)

03-04-2010, 09:07 AM	#1 (permalink)
jazz EK9.org Newbie Join Date: Mar 2010 Location: Tallinn, Estonia Posts: 2	Compression ratio on a B16 Hey guys, I have a question about the compression ratio on a B16A2 when swaping the OEM head gasket (1,2mm) to an aftermarket Buddy Club one (0,4mm). Would the height change affect the timing and ignition that much that it needs to be changed/adjusted? Browsing around showed me that the ratio diffrence would be +0.4/5. Also, the biggest concern is the piston to valve clearance ... Any thoughts? Thanks, J.

03-04-2010, 11:35 AM	#2 (permalink)
Rich777 EK9.org Addict! Join Date: Sep 2007 Location: Birmingham Posts: 1,139	Re: Compression ratio on a B16 Why do you want to change the head gasket ? Whats wrong with Honda OEM ?

03-04-2010, 11:53 AM	#3 (permalink)
civic4g EK9.org Member Join Date: Apr 2009 Posts: 34	Re: Compression ratio on a B16 OEM headgasket 1,2mm thick? is that a joke? __________________ 98' Civic EK4 HB w/ Toda Spec A Camshafts Toda Cam Pulleys Spoon 2 Layer Headgasket Spoon Direct Airflow Pipe Spoon N1 P30 ECU powered by eCtune

03-04-2010, 03:30 PM	#5 (permalink)
jazz EK9.org Newbie Join Date: Mar 2010 Location: Tallinn, Estonia Posts: 2	Re: Compression ratio on a B16 Thanks for the replys. The head gasket leaks and needs to be replaced. Why not OEM? Just got it cheaper compared to the original one. 1,2mm was a random guess. As a single layer gasket was 0,4, so thought OEM 3-layer one should be 3 times as thick. Google didnt help much, so sorry for the lack of knowledge Last edited by jazz; 03-04-2010 at 03:33 PM.

03-04-2010, 04:19 PM	#6 (permalink)
civic4g EK9.org Member Join Date: Apr 2009 Posts: 34	Re: Compression ratio on a B16 OEM headgasket is around 0.7mm, so a drop in thickness of 0.3mm will have very small impact on cam timing. The rule for B-series is: For every 0.012'' of material removal, cam timing gets retarded by 1 crank degree (half degree measured at the cams) __________________ 98' Civic EK4 HB w/ Toda Spec A Camshafts Toda Cam Pulleys Spoon 2 Layer Headgasket Spoon Direct Airflow Pipe Spoon N1 P30 ECU powered by eCtune

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