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Which redblocks are non interference engines?

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Old Jul 12th, 2018, 00:49   #11
AllHailKingVolvo
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I’ve opened a right of can of interference worms here!!

Thanks for the thoughts and info, all.

Perhaps I should have asked whether the B200E is an interference engine or not...totally stock, no head skimming/porting/trick valves etc.

I’m thinking that a high compression lump with a high lift cam would be an interference engine, but please prove me wrong!
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Old Jul 12th, 2018, 10:06   #12
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Quote:
Originally Posted by AllHailKingVolvo View Post
I’ve opened a right of can of interference worms here!!
You haven't really, what you've revealed is a range of opinions and a lack of a definitive list - you required. As far as I'm concerned there's only one Redblock that is non-interference, but naming it will mean more abuse will follow.

Good luck with your search for a car, a lot of problem cars out there and many with expensive or near impossible to fix issues.

Jon.

n.b welcome to come and look at my 2 x 744s but you're too far away.

Last edited by Prufrock; Jul 12th, 2018 at 10:18. Reason: n.b
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Old Jul 12th, 2018, 13:02   #13
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The list I know of

B234 and B204 all variations

B230K and B200K all variations

High compression B19

Those are the only engines I know that will hit the valves with a broken belt
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Old Jul 12th, 2018, 16:04   #14
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How often do cambelts fail "in general experience", providing they are replaced at the recommended interval and correctly tensioned including re-tensioning after the recommended settling in mileage?

And how many of those failures incur damage due to interference?

I have taken the view re redblocks not to worry on the interference issue, just make sure the cambelt is changed and tensioned. Cushti. And one can't guard against absolutely everything.



In general experience, that is a lovely can of worms dangling from a piece of string.

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Old Jul 16th, 2018, 19:34   #15
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Quote:
Originally Posted by Prufrock View Post
You haven't really, what you've revealed is a range of opinions and a lack of a definitive list - you required. As far as I'm concerned there's only one Redblock that is non-interference, but naming it will mean more abuse will follow.

Good luck with your search for a car, a lot of problem cars out there and many with expensive or near impossible to fix issues.

Jon.

n.b welcome to come and look at my 2 x 744s but you're too far away.
Why don't you just bloody name it and stop with the weasel words - every post of yours is borderline frustrating to read.

My 940 had a B230FK and pretty sure that was non-interference (as is the B230FT).

My current 960 with a B6254FS is definitely an interference engine (Whiteblock).

Cheers
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Old Jul 16th, 2018, 21:51   #16
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Quote:
Originally Posted by jonnyf90 View Post
Why don't you just bloody name it and stop with the weasel words - every post of yours is borderline frustrating to read.

My 940 had a B230FK and pretty sure that was non-interference (as is the B230FT).

Cheers
So we're clear, this subject comes up on a regular basis on this forum and I've stated many times in the past what are the non-interference Redblock engines. Weasel words - you may find my posts ambiguous (I'm easily bored), but they are never misleading.

Not one post has actually answered the OPs question, you haven't mentioned that have you South London Boy ?

I'll comment no further on this subject.

Jon.

Last edited by Prufrock; Jul 16th, 2018 at 21:55.
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Old Jul 16th, 2018, 22:36   #17
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Stop being so high and mighty - your arrogance stinks.
If you know the answer to the OP’s question, then give it.
If you don’t, don’t pretend as if you do.

Also, I’m still trying to find out who the previous register keeper for the 700/900 series was.
I’ve tried searching the forum and nothing comes up.

Cheers

PS: if you want to refer to me directly, call me Jonny as that’s my name after all.
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Old Mar 25th, 2020, 00:35   #18
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Just adding my tuppence-ha'penny-worth to this.

My B200E timing belt snapped, and I've got two bent exhaust valves. The head was skimmed when I renewed the head gasket some years ago (not warped, but some light pitting), but is otherwise standard.

Luckily, I was off the power when it snapped, and I think I've got off very lightly considering! Of course, if I'd checked to see if it was due a new belt (it was overdue) and had it renewed, I wouldn't have any bent valves... sigh!
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Old Mar 25th, 2020, 01:29   #19
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Had a 740 with B200E in recently with snapped cam belt. No compression with new belt. Pulled the head to find 4 bent exhaust valves
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Old Mar 26th, 2020, 20:27   #20
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Quote:
Originally Posted by classicswede View Post
Had a 740 with B200E in recently with snapped cam belt. No compression with new belt. Pulled the head to find 4 bent exhaust valves
Good to know Dai, I definitely need to do the one on my 360 then.
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