I can't remember what carb you said it had? The 40 does give extra oomph.
My van will do 60 quite happily and, if I really go for it, it's hit 69 - good, but in comparison to you 652 I imagine still sloth like
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| One for Ken http://www.international2cvfriends.com/forum/viewtopic.php?f=7&t=5782 |
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| Author: | Nelsthebass [ March 19th, 2016, 11:06 pm ] |
| Post subject: | One for Ken |
Can you put a standard later M28 spider and exhausts on an M4 engine? |
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| Author: | ken [ March 20th, 2016, 1:46 am ] |
| Post subject: | Re: One for Ken |
Afraid not, absolutely incompatible. Sam Fieldhouse holds rather a lot of shares in the M4 spares stockpile, if it's a servicable M4 manifold that's needed... Nelsthebass wrote: Can you put a standard later M28 spider and exhausts on an M4 engine? |
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| Author: | Nelsthebass [ March 20th, 2016, 1:50 am ] |
| Post subject: | Re: One for Ken |
Many thanks - I was just thinking I've got a lot of M28 bits and the thought of the exhaust bits of an M4 and their routing fills me with dread - could you put m28 heads on an m4 block then? |
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| Author: | samfieldhouse [ March 20th, 2016, 3:24 pm ] |
| Post subject: | Re: One for Ken |
You can put M4 heads on an M28 block thats been done. I know I'm an M4ophile, but to be absolutely honest, instead of fannying around, just invest in getting it set up proper like and they're dreamy engines. |
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| Author: | Nelsthebass [ March 20th, 2016, 8:19 pm ] |
| Post subject: | Re: One for Ken |
but soooo slooooow! |
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| Author: | Nelsthebass [ April 18th, 2016, 8:41 pm ] |
| Post subject: | Re: One for Ken |
Just a thought - I've got a set of nearly new 9:1 Pistons - would they fit as a direct replacement to the originals? |
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| Author: | samfieldhouse [ April 21st, 2016, 9:23 pm ] |
| Post subject: | Re: One for Ken |
No, the bore diameter is different. Even if you changed the barrels, id be hesitant to subject the crank to that - 7.75:1 - 9:1 is a big leap. Love it for what it is, it's a different driving experiance to the later cars! |
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| Author: | Nelsthebass [ April 21st, 2016, 9:50 pm ] |
| Post subject: | Re: One for Ken |
True - tbh I don't get much chance to drive it as Scoobasteve always has it at his - I'm just the grunt who fixes it! It's just a massive difference jumping for that into my 652 2CV that I keep pondering about giving it a boost..... |
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| Author: | samfieldhouse [ April 22nd, 2016, 11:50 am ] |
| Post subject: | Re: One for Ken |
I can't remember what carb you said it had? The 40 does give extra oomph. My van will do 60 quite happily and, if I really go for it, it's hit 69 - good, but in comparison to you 652 I imagine still sloth like
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| Author: | ken [ April 22nd, 2016, 5:13 pm ] |
| Post subject: | Re: One for Ken |
Umm, cylinder bore is the same as later 602s at 74mm, it's the shape of the piston crown which is very different.  There doesn't seem to be much information given on the Snail forum about how an M4 top end was grafted onto a later bottom end; I've got all the necessary bits here, just lack of time. It wouldn't be quite the same, that's for sure. Even if the 'mix and match' engine's CR was kept around 8.0:1, I'd bet that an M4's camshaft profile has a lot to do with its 'relaxed' behaviour... samfieldhouse wrote: No, the bore diameter is different. Even if you changed the barrels, id be hesitant to subject the crank to that - 7.75:1 - 9:1 is a big leap. Love it for what it is, it's a different driving experiance to the later cars! |
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