What size bolts do i need ? Please help!!

The place to discuss problems and routine maintenance questions and tips that are NOT specifically diesel-related.
Ninja
Regular Member
Posts: 4
Joined: Tue Apr 23, 2019 5:56 am
Location: Tribune, Kansas
Isuzu vehicle(s): ‘86 Isuzu Pup w/ 1.9L

What size bolts do i need ? Please help!!

Postby Ninja » Wed May 15, 2019 9:54 pm

Was wondering if anybody knew the size bolt I need to plug off where the EGR pipe goes into the back of the carburetor ? And what size bolts do I need to plug off the emissions rail holes above the exhaust manifold ? Thanks.

Ninja
Regular Member
Posts: 4
Joined: Tue Apr 23, 2019 5:56 am
Location: Tribune, Kansas
Isuzu vehicle(s): ‘86 Isuzu Pup w/ 1.9L

Re: What size bolts do i need ? Please help!!

Postby Ninja » Wed May 15, 2019 9:55 pm

Truck is a 86 1.9 g200z

oldestisuzuist
Regular Member
Posts: 1351
Joined: Tue Oct 07, 2008 9:10 pm
Location: N W Arkansas

Re: What size bolts do i need ? Please help!!

Postby oldestisuzuist » Wed May 15, 2019 11:11 pm

EGR bung is M22x1.5
Air rail fittings are M14x1.25 (same as a spark plug)
'78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, body ROUGH, bought new 12/4/78. A pre-P'up?
'87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch.

89rebelpup
Regular Member
Posts: 88
Joined: Sat Apr 23, 2016 3:46 pm
Location: Georgia
Isuzu vehicle(s): 1989 Standard cab swb 2.3l (carb)

Re: What size bolts do i need ? Please help!!

Postby 89rebelpup » Thu May 16, 2019 3:51 pm

I took 4 oil pan drain plugs 14x1.25 (unknown original application) and trimmed the collar from around their bolt heads. Then, after chasing the threads in their future holes to repair a previous owners mess, I applied anti-seize and they went in snugly.

Side comment: a thin walled/deep welled sockets best on these.