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Help Upgrade 4jb1t pump head to 12mm

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Re: Help Upgrade 4jb1t pump head to 12mm

Postby rabidrabbit001 » Thu Aug 03, 2017 7:58 am

I am getting ready to do the pump head swap and am thinking I need to replace the shaft seal while it's out. Does anyone have a source for the seal. Is it 18mm 30mm 7mm?
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Re: Help Upgrade 4jb1t pump head to 12mm

Postby stardog » Thu Aug 03, 2017 4:36 pm

I got mine from these guys freewai.com they sell a lot of Isuzu parts.
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Re: Help Upgrade 4jb1t pump head to 12mm

Postby rabidrabbit001 » Sat Aug 05, 2017 5:18 am

stardog wrote:I got mine from these guys freewai.com they sell a lot of Isuzu parts.

I have purchased several items from them. There is 2 problems with that company. #1 the seal they have on their site shows 2 different sizes. I need to know which one. The shaft measures 19.96mm on the caliper. They show and 18mm and a 20mm.
#2 a $3 part cost $75 to ship to me
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Re: Help Upgrade 4jb1t pump head to 12mm

Postby geeves » Sat Aug 05, 2017 6:30 am

If you have the old seal out you should be able to take it to a engineering shop that does seals and have them match it
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Help Upgrade 4jb1t pump head to 12mm

Postby stardog » Sat Aug 05, 2017 4:21 pm

I just bought some more stuff of them freewai.com only cost me $14 Australian dollars for postage 5-8 days delivery time but $75 us dollars for postage is a bit rich.
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96 wizard 3.1 pretty stock for now but have plans intercooler bulbar winch snorkel.

Re: Help Upgrade 4jb1t pump head to 12mm

Postby rabidrabbit001 » Wed Aug 23, 2017 11:05 am

I ordered 2 pair of seals from freewai.com and am hoping they are correct. They are labeled 4jb1 and 4ja1 pump seal.
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Re: Help Upgrade 4jb1t pump head to 12mm

Postby rabidrabbit001 » Tue Aug 29, 2017 10:12 am

Put the 12mm pump head in today. Got it running
and fuel line developed a leak. Very irritating.
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