questions

[blue 464]

Hi all, I have just removed my inlet manifold to replace the gaskets and need some advice please,

1 should all of the 4 long bolts be the same length? the one from the offside rear top is shorter than the others by about 1/4 inch?

2 it appears the heads have been helicoiled as the threads seem to be gold coloured, am i correct in this assumption?

3 what is the best way to ensure the gaskets don`t move when fitting the manifold, the present set had been badly fitted and were out of position, photo`s later when i can get to the main computer

4 on a seperate subject i noticed when i was under the car that 1 of the sump fitting bolts was missing, its the rearmost n/s bolt (under the starter), when i tried to fit one it just pushed straight in, i tried a longer one and that also pushed in, so any ideas? it goes into the block not the alloy bridge piece

all help appreciated
thanks derek

[dasadrew]

1. all same length according to the manual

4. sump has two positions where it is attached by a nut and bolt combination. One position is rear LH.

[jleyton]

Hi Derek,

I'm sure you'll get a few different answers but here's mine.

With regards to your sump, there are IIRC two holes that go right the way through the skirt of the block and are fixed with setscrews and nuts. Why ? I haven't a clue but that's the way Mr Triumph designed it. I guess this is the one you're referring to.

As for your inlet manifold, I'm sure the four bolts are the same length but, when the threads (inevitably ) get stripped, the simplest answer is to fit longer bolts. I wonder if that's what's happened with yours.

My helicoils were silver coloured but I'm sure different makes use different coloured material.

As for the gaskets moving, there are different suggestions here. If you're happy that your head to manifold face is parallel (when the head is skimmed this angle will change slightly) then I think the most common answer is to fix the gasket to the manifold first (Hylomar or Wellseal) and allow it to set before fitting the manifold.

Cheers

Julian

[milothedog]

Hi all, I have just removed my inlet manifold to replace the gaskets and need some advice please,

1 should all of the 4 long bolts be the same length? the one from the offside rear top is shorter than the others by about 1/4 inch?

2 it appears the heads have been helicoiled as "the threads seem to be gold coloured", am i correct in this assumption?

3 what is the best way to ensure the gaskets don`t move when fitting the manifold, the present set had been badly fitted and were out of position, photo`s later when i can get to the main computer

4 on a seperate subject i noticed when i was under the car that 1 of the sump fitting bolts was missing, its the rearmost n/s bolt (under the starter), when i tried to fit one it just pushed straight in, i tried a longer one and that also pushed in, so any ideas? it goes into the block not the alloy bridge piece

all help appreciated
thanks derek

Are you sure you are not confusing it with some copper based grease that may have been applied!


Ian.

[Dave M]

I think the bolts should be the same length but if you can remember where the shorter one came from check the hole has not been plugged at the bottom. I had a cyl head where the bolt hole had corroded through to the waterway behind it and one of the solutions suggested was to cut down a bolt by a quarter of an inch, slot the remaining stud section and seal it into the head with sealer or liquid metal and then refit the manifold using a shorter bolt. I replaced the head but this sounded like a feasible solution, I'm not saying this is the case with your head but its worth checking as someone might have broken into the waterway when fitting the helicoils.
When I refitted the inlet manifold I cut some pieces of Wood and drilled them to match the bolt holes in the inlet manifold. I then stuck the gaskets to the manifold with sealer and bolted the pieces of wood on top and left them overnight before removing the wood and fitting the manifold between the two heads.
Cheers
Dave

[martin]

As far as the gaskets are concerned, use RTV silicone, fit them to the heads with the bolts in place and leave for no more than ten minutes, they will stay in place. I agree with Dave, but it's too much trouble. Martin.

[martin]

P.S. tighten the bolts in place without the manifold, that'll show if any holes are stripped. M.

[blue 464]

Thanks all, i have looked again at the threads, there appears to be a slight shoulder before the thread starts so they must be inserts, i note all your advice with regard to the gaskets and will follow it, I will check the faces are parallel first. cannot work out how to edit the post to add the pictures, can somebody tell me please?

Thanks again Derek

[milothedog]

Thanks all, i have looked again at the threads, there appears to be a slight shoulder before the thread starts so they must be inserts, i note all your advice with regard to the gaskets and will follow it, I will check the faces are parallel first. cannot work out how to edit the post to add the pictures, can somebody tell me please?

Thanks again Derek

Derek, rather than trying to explain have a look at the post Drew did at the top of the Forum home page.

Ian

[Ged]

Hi
I done my inlet manifold a few months ago and the four long bolts are all the same length and the shorter bolts all the same length.I helicoiled the holes and these where silver.I used blue hylomar on the gaskets.You can see a photo of the inlet manifold bolts on paddocks site they sell them as a kit

[blue 464]

Hi all, thanks for the replies, mission accomplished, the good news is all the bolt holes lined up properly and the bolts went straight in, as usual on this car sorting out the p/o bodges took longer than the job. he had punched the gaskets into the bolt holes with the bolts meaning that some bolts would only go half in due to clogged threads and lumps of gasket at the bottom,
pictures of old gaskets below, sorry about the poor quality, the camera wouldn`t focus properly,
Derek
inlet 1.JPGinlet 2.JPGinlet 3.JPG

[martin]

That's great Derek, pleased for you. You've got to love previous owners - not ! Martin.