Chasing the threads
Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Chasing the threads
Can I chase the threads by cleaning up the old bolts and putting "slots" in them (kinda like a tap)? Do I need actual "thread chasers". That's a trick one of the machinist taught me in one of my jobs I had while in college.
Finding a thread chaser locally is getting to be a bitch. I really won't need them after this build, so there's no point in spending tons of money on "top of the line" ones.
Summit has a set for $12, however, they just look like simple threads to me...
The threads in the block aren't beat up, I just want to clean them before I put them together.
Finding a thread chaser locally is getting to be a bitch. I really won't need them after this build, so there's no point in spending tons of money on "top of the line" ones.
Summit has a set for $12, however, they just look like simple threads to me...
The threads in the block aren't beat up, I just want to clean them before I put them together.
Racer
Joined: Feb 2006
Posts: 269
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From: Vancouver B.C.
Buy two sets of tap/die sets (Metric and Standard) for about $14.00 each from NAPA. They'll last you for years.....AND you'll find lots of other uses for them also.
Poor quality, sure....but GREAT to have around.
Poor quality, sure....but GREAT to have around.
Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
I have taps. I need a chase.
http://buy1.snapon.com/catalog/item....re&dir=catalog
http://store.summitracing.com/partde...5&autoview=sku
Melting Slicks
Joined: Jun 2002
Posts: 2,705
Likes: 30
From: Chesapeake Beach Maryland
2015 C5 of Year Finalist
You think these are ok - or junk? They look like pot metal, but they might be good for a couple uses.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D9 00200&N=700+4294853264+115&autoview=sku
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D9 00200&N=700+4294853264+115&autoview=sku
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
You think these are ok - or junk? They look like pot metal, but they might be good for a couple uses.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D9 00200&N=700+4294853264+115&autoview=sku
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D9 00200&N=700+4294853264+115&autoview=sku
This is why I'm thinking of taking an old head bolt and cutting into the threads. I did it for a sparkplug hole once, and it worked fine. At that time, I had access to a mill, I don't today. I'm going Dremel.
Melting Slicks
Joined: Jun 2002
Posts: 2,705
Likes: 30
From: Chesapeake Beach Maryland
2015 C5 of Year Finalist
I'm a little behind you on the reassembly, waiting for my heads to get here.
I still got a ton of stuff I want to clean up in the engine compartment before I really get started putting things back together.
Racer
Joined: Oct 2004
Posts: 409
Likes: 2
From: Toronto Ontario
i used a tap & die on my head bolts and block threads. the threads had alot of old thread sealent on them and the block had a thread that was begining to decay. this made assembly and torqing down easier.
Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
PM sent, put on a Chicken Suit and call me Monte....
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Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Last resort using a tap. I'd prefer not to cut new threads as there's no telling if the bolts would react negatively or not. I don't want to cut more out than is necessary.
Race Director
Joined: Jun 1999
Posts: 14,924
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From: Merritt Ils Fl
You think these are ok - or junk? They look like pot metal, but they might be good for a couple uses.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D9 00200&N=700+4294853264+115&autoview=sku
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D9 00200&N=700+4294853264+115&autoview=sku
Burning Brakes
Joined: Feb 2004
Posts: 1,085
Likes: 7
From: Kanata ON.
You think these are ok - or junk? They look like pot metal, but they might be good for a couple uses.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D9 00200&N=700+4294853264+115&autoview=sku
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D9 00200&N=700+4294853264+115&autoview=sku
That's the way to go!
Race Director
Joined: May 2000
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From: No more yankee my wankee, the Donger is tired!
Team Owner
Joined: Mar 2001
Posts: 54,124
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From: Cincinnati, Oh USA
Running a tap into a threaded bore should not do any, "cutting", and I don't see anything wrong with that practice. Use some oil on the tap so you don't gall the threads. Junk filling the threaded bore will be removed by the tap.
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
BTW, I'm done. The threads were chased, then followed with a clean bolt before I bolted everything up.
Just wonderin' if there really is no need for a chase, why is the practice recommended by every engine builder I spoke to?
In fact, one went as far as to say "make sure it's a CHASE not a TAP".
Pro
Joined: Nov 2006
Posts: 638
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From: Plano TX
I honestly have never had any issues using my taps to clean threads. Everything has always snugged up and torqued down fine for me. It's just one way I've learned from being around working on cars and large machinery with my dad growing up.
