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98 S70, hole on top of engine...

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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theWIFES_S70
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98 S70, hole on top of engine...

Post by theWIFES_S70 » Fri Oct 14, 2016 10:59 pm

I'm sure this question has been asked before, but why is there a hole on top of my engine? I feel like this is the first time I'm seeing this... :shock:

Does something go here?
S70_top_of_engine_HOLE.jpg
1998 Volvo S70, N/A, 5-speed, 185K
2007 Volvo S40, 2.4i, 5-speed, 99K

tryingbe
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Re: 98 S70, hole on top of engine...

Post by tryingbe » Sat Oct 15, 2016 1:50 am

No, just casting hole.
85 GLH, 367 whp
00 Insight, 72 mpg

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abscate
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Re: 98 S70, hole on top of engine...

Post by abscate » Sat Oct 15, 2016 2:17 am

It's a henway hole. If you have a 7 in your VIN you should have a henway option.
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jreed
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Re: 98 S70, hole on top of engine...

Post by jreed » Sat Oct 15, 2016 6:04 am

Call me Groucho, but what's a henway?
:)
1997 855 GLT (Light Pressure Turbo) still going strong. Previous: 1986 240 GL rusted out in '06, 1985 Saab 900T rusted out in '95, 1975 Saab 99 rusted out in '95, 1973 Saab 99 rusted out in '94

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Re: 98 S70, hole on top of engine...

Post by crlande » Sat Oct 15, 2016 6:30 am

On my '94 it is for a tube belonging to the air pump system.

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Re: 98 S70, hole on top of engine...

Post by beigg » Sat Oct 15, 2016 7:01 am

jreed wrote:Call me Groucho, but what's a henway?
:)
something that supports a 5lbs +/- a 1lb item.
ugh smh 850 Turbo fridge

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theWIFES_S70
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theWIFES_S70

Re: 98 S70, hole on top of engine...

Post by theWIFES_S70 » Sat Oct 15, 2016 12:24 pm

I'm so confused...

I was going to run the engine without the spark cover installed, the way all the pros do. But man, you can look into the engine through there! What if something entered the engine from there? I think I'll keep the cover on just to be on the safe side.
1998 Volvo S70, N/A, 5-speed, 185K
2007 Volvo S40, 2.4i, 5-speed, 99K

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Re: 98 S70, hole on top of engine...

Post by Sommerfeldt » Sat Oct 15, 2016 12:41 pm

This thread gave me déjà vu.

- S
'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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Re: 98 S70, hole on top of engine...

Post by theWIFES_S70 » Sat Oct 15, 2016 12:55 pm

Sommerfeldt wrote:This thread gave me déjà vu.

- S
Were you thinking of running your engine with the spark plug cover off, too??? I am googling S70/850 engine images and found one with a metal railing that connects to one of those holes...

Image
But even on that engine, there's a hole there...

Over here, I think I see the hole...
Image
1998 Volvo S70, N/A, 5-speed, 185K
2007 Volvo S40, 2.4i, 5-speed, 99K

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Re: 98 S70, hole on top of engine...

Post by Sommerfeldt » Sat Oct 15, 2016 12:59 pm

theWIFES_S70 wrote:Were you thinking of running your engine with the spark plug cover off, too???
No. :lol:
But, we did have a thread a year or so ago, I think, about those holes - someone found that hole plugged with RTV goop and there was some discussion about what to do. Also, there was a "henway, what's a henway, about 5 pounds" exchange. :lol:
I'm trying to search for it, but no luck yet. I believe we figured out what the holes are for, but I must be getting old.

- S

Edit; crlande is right, that's what it's for. In the pic you found, it doesn't seem to actually be connected to anything - looks like some kind of heating contraption?
'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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