Cut valve guides good for DD?
10-29-2008, 02:00 PM
#1
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Cut valve guides good for DD?
I just bought a fully ported RLZ race head but just realized that the valve guides were cut. The car will be daily driven with the weekend drag warrior spirit. I just want to know advantages and disadvantages to using cut guides and will it be ok for DD.
10-29-2008, 02:06 PM
#2
Re: Cut valve guides good for DD? (Teamdiesel)
Are they flush with the port roof? If so, I wouldn't recommend it.
The shorter guide allows more axial movement of the valve which will wear the guides out much quicker which will lead to even more problems.
However, shorter guides do not disrupt airflow as much which would lead to better flow characteeristics.
The shorter guide allows more axial movement of the valve which will wear the guides out much quicker which will lead to even more problems.
However, shorter guides do not disrupt airflow as much which would lead to better flow characteeristics.
10-29-2008, 02:21 PM
#3
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Re: Cut valve guides good for DD? (patriot)
they are pretty much flush with the roof 
. here is a pic http://i47.photobucket.com/alb...l.jpg
. here is a pic http://i47.photobucket.com/alb...l.jpg
10-29-2008, 02:47 PM
#5
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Re: Cut valve guides good for DD? (patriot)
That is a race head. That is probably what you wanted as the CFM's are better. It also means more maintenance as all race car parts do. Short guides, more CFM's sometimes more BHP, shorter life. You got what you ordered, why question it now?
10-29-2008, 03:02 PM
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Re: Cut valve guides good for DD? (DonF)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Teamdiesel »</TD></TR><TR><TD CLASS="quote">I just bought a fully ported RLZ race head but just realized that the valve guides were cut. The car will be daily driven with the weekend drag warrior spirit. I just want to know advantages and disadvantages to using cut guides and will it be ok for DD.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF »</TD></TR><TR><TD CLASS="quote">That is a race head. That is probably what you wanted as the CFM's are better. It also means more maintenance as all race car parts do. Short guides, more CFM's sometimes more BHP, shorter life. You got what you ordered, why question it now?</TD></TR></TABLE>
Spoken like a true gentleman
It's strange how peoples buy stuff w/o realizing what they are buying before hand.
To the OP, you seem to be pulling your head and rebuilding you block quit often any ways, I say use the head, and when it needs new guides or valves, throw some new ones in You seem to have the tools and knowlegde to pull the head and motor yourself so that is always a plus
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF »</TD></TR><TR><TD CLASS="quote">That is a race head. That is probably what you wanted as the CFM's are better. It also means more maintenance as all race car parts do. Short guides, more CFM's sometimes more BHP, shorter life. You got what you ordered, why question it now?</TD></TR></TABLE>
Spoken like a true gentleman
It's strange how peoples buy stuff w/o realizing what they are buying before hand.
To the OP, you seem to be pulling your head and rebuilding you block quit often any ways, I say use the head, and when it needs new guides or valves, throw some new ones in
You seem to have the tools and knowlegde to pull the head and motor yourself so that is always a plus
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10-29-2008, 03:44 PM
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Re: Cut valve guides good for DD? (Master of the Universe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Master of the Universe »</TD></TR><TR><TD CLASS="quote">The head will still prolly outlast the bottom-end here.
</TD></TR></TABLE>
Are you referring to when he reused his HG like 3 times
</TD></TR></TABLE>Are you referring to when he reused his HG like 3 times
10-29-2008, 04:10 PM
#12
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Re: Cut valve guides good for DD? (ruffrhyder)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ruffrhyder »</TD></TR><TR><TD CLASS="quote">
Spoken like a true gentleman
It's strange how peoples buy stuff w/o realizing what they are buying before hand.
To the OP, you seem to be pulling your head and rebuilding you block quit often any ways, I say use the head, and when it needs new guides or valves, throw some new ones in You seem to have the tools and knowlegde to pull the head and motor yourself so that is always a plus </TD></TR></TABLE>
how will I know when it needs new guides or valves before something devastating happens? I am rebuilding the whole engine as I am now putting in a Crower 92mm stroker kit with Endyne 85mm Rollerwaves
.
Spoken like a true gentleman
It's strange how peoples buy stuff w/o realizing what they are buying before hand.
To the OP, you seem to be pulling your head and rebuilding you block quit often any ways, I say use the head, and when it needs new guides or valves, throw some new ones in
You seem to have the tools and knowlegde to pull the head and motor yourself so that is always a plus </TD></TR></TABLE>how will I know when it needs new guides or valves before something devastating happens? I am rebuilding the whole engine as I am now putting in a Crower 92mm stroker kit with Endyne 85mm Rollerwaves
.
10-29-2008, 04:34 PM
#13
Re: Cut valve guides good for DD? (Teamdiesel)
The Helms manual tells how how to check this for stock heads. This will give you an idea of what is normal. Use this as a guide/good starting point. Otherwise you won't even have the proper terminology or background to even talk to someone knowledgeable such as a DonF or gansta teenage H-T engine builder.
10-29-2008, 05:18 PM
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Re: Cut valve guides good for DD? (Master of the Universe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Master of the Universe »</TD></TR><TR><TD CLASS="quote">The Helms manual tells how how to check this for stock heads. This will give you an idea of what is normal. Use this as a guide/good starting point. Otherwise you won't even have the proper terminology or background to even talk to someone knowledgeable such as a DonF or gansta teenage H-T engine builder.</TD></TR></TABLE>those are the smartest people here.. 
10-29-2008, 05:22 PM
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Re: Cut valve guides good for DD? (Master of the Universe)
Before we start throwing Rlz name around please make sure this is a true Rlz head. If it is it should have the Rlz insigna on it.
10-29-2008, 05:31 PM
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Re: Cut valve guides good for DD? (Teamdiesel)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Teamdiesel »</TD></TR><TR><TD CLASS="quote">
how will I know when it needs new guides or valves before something devastating happens? I am rebuilding the whole engine as I am now putting in a Crower 92mm stroker kit with Endyne 85mm Rollerwaves .</TD></TR></TABLE>
It's gonna be a beast
how will I know when it needs new guides or valves before something devastating happens? I am rebuilding the whole engine as I am now putting in a Crower 92mm stroker kit with Endyne 85mm Rollerwaves
.</TD></TR></TABLE>It's gonna be a beast
10-29-2008, 06:09 PM
#17
Re: Cut valve guides good for DD? (Professor15)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Master of the Universe »</TD></TR><TR><TD CLASS="quote">The Helms manual tells how how to check this for stock heads. This will give you an idea of what is normal. Use this as a guide/good starting point. Otherwise you won't even have the proper terminology or background to even talk to someone knowledgeable such as a DonF or gansta teenage H-T engine builder.</TD></TR></TABLE>
That's me, except 25 and not so gangsta in suburbs MD.
That's me, except 25 and not so gangsta in suburbs MD.
10-29-2008, 06:29 PM
#18
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Re: Cut valve guides good for DD? (patriot)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Fink29 »</TD></TR><TR><TD CLASS="quote">Before we start throwing Rlz name around please make sure this is a true Rlz head. If it is it should have the Rlz insigna on it.</TD></TR></TABLE>
Here you go http://i47.photobucket.com/alb...l.jpg
http://i47.photobucket.com/alb...l.jpg
Here you go
http://i47.photobucket.com/alb...l.jpghttp://i47.photobucket.com/alb...l.jpg
10-29-2008, 06:30 PM
#19
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Re: Cut valve guides good for DD? (ruffrhyder)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ruffrhyder »</TD></TR><TR><TD CLASS="quote">
It's gonna be a beast </TD></TR></TABLE>
I can just imagine
It's gonna be a beast
</TD></TR></TABLE>I can just imagine
10-29-2008, 06:36 PM
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Re: Cut valve guides good for DD? (Teamdiesel)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Teamdiesel »</TD></TR><TR><TD CLASS="quote">
I can just imagine </TD></TR></TABLE>
dear..lord.
I can just imagine
</TD></TR></TABLE>dear..lord.
10-29-2008, 07:08 PM
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Those guides are spot faced flat ...
I have World challenge customers with spot faced guides .. no problems so far ...
My question thou Why did you buy a race head if you were going to daily drive it ...
I have World challenge customers with spot faced guides .. no problems so far ...
My question thou Why did you buy a race head if you were going to daily drive it ...
10-29-2008, 07:15 PM
#23
Honda-Tech Member
Congrats on your 1000th post, Brad. If I go to PRI, I will get you a double shot of Jack Daniels on me. Then we can go pig out on some million calorie chinese food once we're all primed and ready.
10-29-2008, 09:22 PM
#25
Honda-Tech Member
Re: (crxmanifold)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxmanifold »</TD></TR><TR><TD CLASS="quote">Have new guides installed. Problem solved. </TD></TR></TABLE>
Not entirely.
Not entirely.