Custom PRO A.C.T. and LPK not compatable?
Printed From: Tippmann Paintball
Category: Paintball Equipment
Forum Name: Upgrades and Customizing
Forum Description: Trick it out!
URL: http://www.tippmannsports.com/forum/wwf77a/forum_posts.asp?TID=158679
Printed Date: 16 February 2026 at 8:06am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Custom PRO A.C.T. and LPK not compatable?
Posted By: vinnya42
Subject: Custom PRO A.C.T. and LPK not compatable?
Date Posted: 16 August 2006 at 3:16pm
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I received a LPK that said it was good
for the Custom PRO but there no option to put the ACT system in? Can I
just use my old rear bolt and use a lighter spring (I have a sping kit).
I could also bore out the heavy bolt and put holes in it to get the weight about the same. I would have to use the side bolt handle if I modified the spring or bolt…this should be OK, the rear handle is only to reduce friction right, and I am using 100% synthenic lube. Any help would be appriciated, I want to keep my ACT technology it really works great and I want to use less air  Vince |
Replies:
Posted By: Monk
Date Posted: 16 August 2006 at 3:31pm
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You could get a new spring, cut into your bolt to lighten it. Then you would be done if you have the new valve and volumizer. Otherwise you would have to lighten the valve spring, mill the valve body away to allow more air to pass through. Then get a volumizer. Its been done, but not on an ACT though. |
Posted By: vinnya42
Date Posted: 16 August 2006 at 3:40pm
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No I have the whole LPK kit from tippmann, it just won't work with the ACT. So I should be able to get the weights really close then use a lighter spring and be OK...very cool any other helpfull advise is appriciated Vince |
Posted By: Bruce A. Frank
Date Posted: 16 August 2006 at 3:48pm
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I would use the stock bolt with the LP kit. Try it first. If there is a problem switch to a lighter power spring. I believe that a light enough power spring will allow the LP system to work. Let us know whether it works or not. -------------  
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vinnya42 wrote:Posted By: Monk
Date Posted: 16 August 2006 at 8:47pm
Yeah, didnt think of that. Definatly try the stock bolt. However, where is he going to get a lighter spring? Cut his stock one? or spend more money on a spring kit? |
Posted By: vinnya42
Date Posted: 16 August 2006 at 10:50pm
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So I just put on the LPK with my stock bolt and the lightest spring(bought a spring kit already) I had and gave it a go...I was at 300psi with what looked like a good fast ball. I adjusted down to just alittle and got the fast studder so I set it back up to 300psi. I haven't cron'ed yet but I think I am pretty close! Thanks for advice. 300psi is pretty good with with the stock bolt  VInce |
Posted By: Monk
Date Posted: 17 August 2006 at 12:29am
| Velocity is the real factor on this. Get it chonoed and see. But I think you might have the best ACT low pressure conversion. |
Posted By: vinnya42
Date Posted: 20 August 2006 at 10:48pm
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I used 200 balls and ended up with 350 psi and a 280 crono. I did notice a quieter fire, plus much less kick and better balls pure tank...about a 100 balls more. It seems more accurate too. Vince |
Posted By: Monk
Date Posted: 20 August 2006 at 10:58pm
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Awesome. Thats what Tippmanns are all about, moddability. I wonder how well it would work if you lightend the bolt? |
Posted By: vinnya42
Date Posted: 21 August 2006 at 9:47am
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Since Tippmann doesn't make an ACT bolt I probably won't find out. the stock bolt is steel so drilling it out would be more trouble then it is worth. I am very happy with the LPK! Vince |
Posted By: Bruce A. Frank
Date Posted: 21 August 2006 at 1:44pm
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Good to hear that it was successful and that you are able to run such relatively low pressures. -------------
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