compression test at engine without having bell-housing...
compression test at engine without having bell-housing...
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Chim-4.6

Original Poster:

6 posts

76 months

Thursday 19th September 2019
quotequote all
My fault:
Instead of taking the time and testing the compression BEFORE moving my 4.0 out of the engine bay, i have to do that now on my workbench.

I was so sure, that the faulty engine had a slipped-liner and would go to the scrap metal collectors.
But all the "experts" were wrong: It´s just a faulty rocker arm.

The question is:
What opportunities do i have, without having the bell-housing & a starter?
Is there any?


Edit:
I was wrong: Starter is mounted at engine block.
Pretty easy to test it on a workbench.



Edited by Chim-4.6 on Friday 20th September 12:07

Boosted LS1

21,200 posts

281 months

Thursday 19th September 2019
quotequote all
Fit a flex plate or flywheel and bolt it to an engine stand. Preferably one that's stable. Mount the engine as low as possible.

Belle427

11,146 posts

254 months

Thursday 19th September 2019
quotequote all
May be a perfect opportunity now for you to do a 4.6 conversion to match your username!
Not much help I know but I wish I had when my engine was out.

Penelope Stopit

11,209 posts

130 months

Thursday 19th September 2019
quotequote all
Weld some lengths of strong angle iron together so that they bolt to the face of the block in more than one place to make them rigid when fitted, make them so that the starter can be bolted to them

rev-erend

21,596 posts

305 months

Friday 20th September 2019
quotequote all
It all sounds like a lot of effort ..

Why not just unbolt the bell housing from the gearbox. It's only 6 bolts and you have an empty engine bay, so great access. Bolt in the starter motor, bit of heath robinson wiring and you can do your test.

liner33

10,861 posts

223 months

Friday 20th September 2019
quotequote all
Do a leakdown test instead will tell you more and much easier to do with the engine out

Sardonicus

19,289 posts

242 months

Friday 20th September 2019
quotequote all
liner33 said:
Do a leak-down test instead will tell you more and much easier to do with the engine out
This ^ far more information smile you dont need a bell-housing to mount the starter motor thats mounted to the block independent of the B/H , then as mentioned already cobble together some wiring to power it just 3 wink but TBH more meaningful compression test results are achieved when the engine is at running temp anyway scratchchin

Chim-4.6

Original Poster:

6 posts

76 months

Friday 20th September 2019
quotequote all

I confess: That was a mega-stupid question from me.

Mea culpa.

To my apology:
I´m not able to check, as the engine is still 180 miles away.
And even if i had 3 industrious days, changing the engine with a friend,
i forgot about the layout of the block.

So i looked at pictures in WWW.

The flange / hole for the starter is at the engine.
So pretty easy to fit a starter-motor, unscrew all spark-plugs and testing all cylinders.



Chim-4.6

Original Poster:

6 posts

76 months

Friday 20th September 2019
quotequote all
Belle427 said:
May be a perfect opportunity now for you to do a 4.6 conversion to match your username!
Not much help I know but I wish I had when my engine was out.
That´what i did 4 weeks ago.
Moving out the 4.0 and fitting in a 4.6 crossbolted with tooled heads.
12.000 miles old, from a Westfield 7.


Incomprehensible, that i dismounted the starter on my own and forgot about that...

stevesprint

1,121 posts

200 months

Monday 23rd September 2019
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Sardonicus said:
you dont need a bell-housing to mount the starter motor thats mounted to the block independent of the B/H , then as mentioned already cobble together some wiring to power it just 3 wink
Simon is spot on as usual, I used jump leads to turned mine over while on the engine stand and the green lamp is the oil pressure switch.