Grout or not to grout?

Grout or not to grout?

Joined: February 13th, 2006, 4:59 am

April 20th, 2012, 9:20 pm #1

We're just about to bolt this mud bog engine together and I know we've been over this but at just over 500 hp should I be grouting? Or take my chances? Remember stock stroke?
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Joined: June 12th, 2009, 1:31 pm

April 20th, 2012, 10:47 pm #2

Best to do before the bore job ive been told it will move the cylinder walls around some.
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Joined: February 3rd, 2003, 5:22 pm

April 20th, 2012, 10:52 pm #3

IMHO a matter as much as to running time as it is to hp. If it's a dedicated race engine with limited running time during an event and is only run at events (no street driving) by all means I'd grout it.
Last edited by machoneman on April 20th, 2012, 10:54 pm, edited 1 time in total.
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Joined: December 16th, 2003, 1:59 am

April 22nd, 2012, 8:40 am #4

i was reading that some tractor pullers fill the heads solid as well, pretty sure they're running alky

a 55# bag of Embecco 885 will $ less than store bought block filler, especially if you're gonna fill it significantly


there'll be phantoms, there'll be fires on the road... and the white man dancing
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Joined: December 5th, 2011, 12:21 pm

April 22nd, 2012, 11:55 am #5

We filled my dragster engine to the top making around 1000hp and never split a bore so it must help .
As tinman said reading that some fill heads as well we have also filled our heads after we had to repair a broken rocker mount hoping it may give a bit more strength and have had no trouble with since
regards greg gibson
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Joined: February 13th, 2006, 4:59 am

April 22nd, 2012, 7:00 pm #6

Yes debating what to do?I have an old block ready to go and didnt really want to fill it cause might want to use it in street car.But then again it might crack and then its worthless??Are the pantera engines holding together after 500hp?
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Joined: February 13th, 2006, 4:59 am

April 22nd, 2012, 10:18 pm #7

Whos running 500+ hp and no grout? N/m
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Joined: June 12th, 2009, 1:31 pm

April 23rd, 2012, 3:28 am #8

no dyno numbers but the ass ometer tells me i am right in there, and no grout.
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Joined: May 20th, 2005, 4:48 pm

April 23rd, 2012, 10:59 am #9

Yes debating what to do?I have an old block ready to go and didnt really want to fill it cause might want to use it in street car.But then again it might crack and then its worthless??Are the pantera engines holding together after 500hp?
Even if it just up to the bottom of the water pump holes. You're looking at less than $100 for a bucket of mud, and another $100-125 to hone the block. Cheap insurance. If you went the other direction and took your chances, a split cylinder would end up costing you much more than that.

Brent Lykins
B2 Motorsports, LLC






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Joined: June 16th, 2004, 4:57 am

April 23rd, 2012, 12:06 pm #10


X2
<div>If this is a race engine regardless of it's HP level or it's intended "race" use (drag, mud/dirt, oval, bracket, grudge, power adder, etc, etc) using some amount of grout (short, med, tall, or full fill) just makes sense with a factory/stock C block.  </div><div> </div><div>Only really hard decision on using grout, or not, is mostly with street driven cars. That's where the decision can get a little muddy. </div>

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