engine nos for 3.0 v6 and 2.5 v6

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prichardson6
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engine nos for 3.0 v6 and 2.5 v6

Post by prichardson6 » Mon Oct 03, 2011 11:04 pm

how can i tell if i have a 3. litre or 2.5 litre engine what part of the engine no relates to that
Also how many different ways are there to keep the dissy locked in position
any one know a good firm down here in devon that can do me a complete rewind ive got the drawing and a new loom need someone with a garage not a mobile electrician



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Re: engine nos for 3.0 v6 and 2.5 v6

Post by Coupe Racing » Mon Oct 03, 2011 11:10 pm

Hi

between the two - they share block,cam , heads,con rods , push rods , sump , oil pump , front cover.

The differences - crank , pistons( I think) inlet manifold if a single carb , flywheel

There are other subtle differences - but nothing to worry about.
So you need to strip it down to check - and the easiest way is to check the crank shaft as it has fewer balance weights

The dizzy is only held in place with a cast clamp - although I have devised another method


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Re: engine nos for 3.0 v6 and 2.5 v6

Post by scimjim » Mon Oct 03, 2011 11:11 pm

I think they're identical externally? so I don't think you can really tell without taking it apart and checking crank & pistons.

without looking in the manual, I've only seen one method of locking the dizzy.
Last edited by scimjim on Tue Oct 04, 2011 8:28 am, edited 1 time in total.


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Re: engine nos for 3.0 v6 and 2.5 v6

Post by tony.idle » Tue Oct 04, 2011 7:47 am

The difference is in the stroke (60.35 vs 72.42). You'll be able to measure it with the heads off or (just maybe) through a plug hole.


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Re: engine nos for 3.0 v6 and 2.5 v6

Post by scimjim » Tue Oct 04, 2011 8:28 am

you might also be able to see the bowl in the piston through a plug hole - the 2.5 has a much shallower bowl in the top (if you know what a 3 litre piston looks like).


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Re: engine nos for 3.0 v6 and 2.5 v6

Post by Coupe Racing » Tue Oct 04, 2011 8:39 am

Just checked my factory parts manual and the Part numbers for the cylinder blocks are the same - 722M 6611 AA


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Re: engine nos for 3.0 v6 and 2.5 v6

Post by scimjim » Tue Oct 04, 2011 8:45 am

what - for the pistons?


Jim King

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
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Re: engine nos for 3.0 v6 and 2.5 v6

Post by Coupe Racing » Tue Oct 04, 2011 8:47 am

ammended


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Re: engine nos for 3.0 v6 and 2.5 v6

Post by scimjim » Tue Oct 04, 2011 8:56 am

ah - yep, checked this morning and everything's identical except for crank, pistons, inlet manifold & carb.


Jim King

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

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