Thread: GTP Seafoam Procedure - question

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  1. #1 GTP Seafoam Procedure - question 
    GTX Level Member Elite6's Avatar
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    For top end cleaning:

    1. Make sure motor is cold
    2. Pull vacuum line on top of SC
    3. Take straw & let motor ingest 7 oz over the course of 2 minutes
    4. As soon as mixture is done, shut car off
    5. Wait 20 mins
    6. Fire up car
    7. Process sound right?


    I won't be driving the car, it will be parked do I rev a whole bunch & for how long?
    2005 E55 - stock
    1999 GTP 2dr - 9" HAI | Headers | 1.84's | 3.4 | Ported SC|
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  2. #2 Re: GTP Seafoam Procedure - question 
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    If you do that your going to help it stay running by bringing up the rpms suck in the seafoam and shut the car off wait 10 15 mins. When you start it back up your going to want to be in an open area it will smoke like a mother$)@&$&' I usually drive around in 2nd gear or jump on the highway it works good

    Good luck let us know what happens
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  3. #3 Re: GTP Seafoam Procedure - question 
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    Grand Prixs Of North America • View topic - Seafoam writeup



    Thats the write up i used.. Worked VERY well...
    97 GTP Sold-prolly rusted away by now
    2011 F-150 Yote powered
    Too Hot to Handle, Too Cold to Hold
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  4. #4 Re: GTP Seafoam Procedure - question 
    GTP Level Member FriboRage's Avatar
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    Some people have said that vac line on top of the blower will bring the seafoam through the rotors which can harm them.

    I was advised to use the vacuum line off the bbv



    If you follow it back, it goes directly into the LIM, bypassing the supercharger. Worked for me and others and doesnt risk the blower.

    Just dunk that hose into the can as far in as you can get it, and let it drink up... mine slurped up the whole can in about a minute or so. Then run around and shut it off as fast as you can.
    --------------------------------------------------------------------------------
    2004 Grand Prix GTP Comp G: Intake, F+R plogs + downpipe, 1.7 YT Rollers, Overkill, F-body front brakes, drilled/slotted r1 concept rotors.
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  5. #5 Re: GTP Seafoam Procedure - question 
    GTX Level Member Elite6's Avatar
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    Will i have a problem if i do seafoam. Start car and let run for 10 mins then not drive it for a week or so? Or will seals and **** get a beating?
    2005 E55 - stock
    1999 GTP 2dr - 9" HAI | Headers | 1.84's | 3.4 | Ported SC|
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  6. #6 Re: GTP Seafoam Procedure - question 
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    Did the seafoam. Let sit for 10 mins. Ran car for about 10 mins & let sit since. I didn't get nearly as much smoke as some cars I have seen. Used about 5 oz or so. Pulled in through the vacuum hose on the bbv & shut car off right way once sucked up. One thing I did notice was a fair bit of stuff coming from engine bay. Looks like I might have a few small leaks in the front & rear header areas.
    2005 E55 - stock
    1999 GTP 2dr - 9" HAI | Headers | 1.84's | 3.4 | Ported SC|
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