RubberBerner

Alright, I'm not sure if the dude before me just tightened it too hard and they broke off, or what... but now all i have is about 50% of the exhaust, and a few of the intake that are just the "hip" part of the bolt hole. I think I'm going to just get some thick washers, and new bolts (guy before me only had about 3 bolts in the exhaust manifold). I hate getting cars that were owned by a fricken retard. I was thinking about welding on some loops, just to make it a full circle, but I've heard welding to cast iron is pretty difficult. Any suggestions that would be better than my washer Idea?

NismoPick

missing holes??? So you're saying some of the manifold studs / bolts have been broken? To do it right & not burn through the gasket, ya gotta replace them (easiest done w/ the manifolds off).

RodMoyes

Manifold bolts (exhaust) break all the time. It's a really well known issue. For that matter... the Nissan 3.0 V6's (all of them) are also notorious for breaking manifold bolts (and almost always it's the hardest ones to get to). It may not be the fault of the "Retard" that used to own your car. Take the manifolds off, Get a hold of a right angle reversable drill and drill out the old broken off studs... carefully. Nissan sells the studs and bolts fairly cheap and they are ALWAYS in stock... Further proof that they are a known problem. Have fun.

Rod.

s/cL3.0

I replaced mine with grade A/ hardened bolts.. Hope it works

tickwon

shoot, been there done dat.

FubarI33t

blaaa. them darn bolt's are a Bitch. Knuckel buster's is what they are. that there bolt closist to the firewall is the fun one, mainly when attacking it from above, and then she snap's on ya. Make a preacher cuss

RubberBerner

ok...none of you understand what I'm saying. NONE OF THE BOLTS ARE BROKEN. now that we got that cleared up. the holes on the manifold that the bolts pass through, they only make about %40 of the circle the bolts pass through...meaning it will only have %40 the holding pressure. Nevermind, I'll do it my own way, I'll post pictures later tonight to show you what I'm talking about.

lww

Are you talking about the ledge on the exhaust manifold that the bolts/washers press against?

If it's what I think it is, these never had full circles. If you look at the intake and exhaust manifolds, the top half is the intake and the bottom half is the exhaust manifold.

There is no 'hole' in the manifold for the bolts/nuts. The intake half and exhaust half share the same bolt/washer/nut.

RubberBerner

Nevermind...I'm trying to put together an engine...actually a whole car that somebody took apart and lost a bunch of bolts...I wasn't aware, that the exhaust manifold is held on by just 5 bolts...thats crazy to me, my 240 has 4 cylinders and has 8 bolts...i thought all the holes in the side of the head needed to have bolts in them...lol but then i got the chiltons out...sure enough, only 5.
The funny thing is before i read the chiltons, i got the exhaust manifold on (with 10 bolts mind you haha), and as soon as I tried to put the intake manifold in position to bolt on...i knew what i had done...it wouldn't go into place because of the extra bolts.

NismoPick

This comment is not to be rude... but what's with everyone trying to put together engines "blindfolded" ???? I personally get out the manual when I'm diggin deep into any engine I'm not very familiar with.

apollo

the "hole" that you're talking about that the bolt passes through comes from factory like that. 6 bolts secure the intake manifold and the exhaust manifold, 5 hold the exhaust manifold alone, and 4 hold the intake maifold alone.

*the yellow are used to secure both the greeen are just for exhaust

RodMoyes

I guess we're all just a bunch of lame ***'s because we can't figure out exactly what homeboy is talking about. Of course, a little more clarity on his part might be in order so that we don't look like chumps.

Rod.

lww

I doubt it. I'll always look like a chump... Just ask Apollo...

lww

Dude, I use ALL THREE!!! The FSM, Chiltons & Haynes and then I compare them to double check.

apollo

i couldnt have put it any better but hey . . . thats what you get for driving that economic, grocery gettin honda

s/cL3.0

OUCH> > Honda

Bleach

I just call up LWW at home and make him do all my research... easier that way... got the Lazyboy in the garage inbetween the car and a computer.