I'm looking for a 1298cc pre-crossflow complete engine or block 5 bearing crank...any condition.. hope you can help....
I'm looking for a 1298cc pre-crossflow complete engine or block 5 bearing crank...any condition.. hope you can help....
I think i've got a crank and block somewhere. Does it have to be pre xflow? I've got xflow ones as well.
yes..has to be pre-crossflow.....to do with race regs...also 1300 to come in under 1400cc class.. block and crank might do as a starting point.....I think I can get pistons, rods, etc....
Aint those pre-crossflow 5 bearing engines 1340cc?
No mate, the 1340cc motor is an stroked 997cc Anglia motor and share the same 3 bearing block.
The 1300 Pre-Crossflow is an uber rare engine that was only in the MkII Cortina from 1966-mid 1967 and this is a pukka 5 bearing motor.
You have to be careful what you are competing in as U2TC for example, the Under 2 Litre Touring Car formula wont let you run it, or its bigger brother the 1500 that was in the MkII Cortina as the cut off point is Jan 1st 1966
I do have a set of rods for one in my shed should you need them.
Cheers Neil
as you say neil....I might very well be interested in the rods if I can get the other bits..... still waiting to hear from rollerrocker if he can find the crank/block....thanks fred
Ooopppppps. sorry
Forgot about this.
I,ll have a look next week.
What are you racing?
Robyn
hello robyn...I'm rebuilding a Ginetta g4 to original spec.....for hillclimb/sprint, maybe the odd race...i'm sure that a crossflow block with 81mm bore [as opposed to an 'original' pre-crossflow block] would be ok.... not sure if there is any difference at all...as far as I can find out the only difference is the cyl head... so if you just have the short throw crank [2.48in - 63mm] that would be fine...cheers fred
i guess it depends on how pedantic the rule makers are, for for instance some historic stuff wont allow a 205 pinto block in place of an early 20 version, others will, its likely x/flow casting numbers will be wrong, on the other hand if the block looks right and has the right bore and stroke...........
yes you're right graham...FIA will only allow standard 997cc as homologated, but HSCC are much more lenient...ideally I would like an original 1298 block but these are a bit scarce.....are you familiar with all the block casting numbers?
thanks neil...just the job......I presume that the 1300 block is slightly less tall than the 1500.....or are the rods longer? if Robyn's block is the 2730E one, and the crank is 63mm, we're in business!!
Before there was crossflow there was pre-crossflow !
The engines in the early MkII Cortina were the forerunners to the crossflow so parts do crossover and which is why out of all the pre-crossflows they are the most sought after.
681F is the 1968 block for the Crossflow.
Yes I know about pre and crossflows 2737 was definately the 1st 1600 crossflow engine number,infact ALL 1600 rods are numbered 2737.
http://www.turbosport.co.uk/showthre...flow-T-numbers
Right, i cant find the 2730 block that i thought i had.Must of sold it earlier.
I have got 1300cc 681f,711m and 2737 engines in various stages of disassembley.
I,m pretty sure 1300 pre-xflow and crossflow cranks are the same .
Let me know if any thing is of use to you.
robyn
hi robyn....what a b****r....if I can't find a 2730 block, I might be better going for the 2737.....and then maybe the full 1500cc job...I don't know if scrutineers would look kindly on a 681f block with a pre-crossflow head..I'm not sure if pre-crossflow and crossflow 63mm cranks are interchangeable....maybe Neil knows?
Best hop over onto www.buysellcortina.co.uk and see if any of them lads have one for sale.
I picked one up off a chap on there some time ago, but it turned out the thrust bearings on the crank had been put in the wrong way round and mullered the block and crank so it was scrap. Hence me having a set of rods spare.
I think Robyn ended up with the head, through a roundabout route.
Thanks for that Neil... I have posted an ad in 'buysellcortina'....we'll see what it brings...I have found out that a few later G4s were fitted with the 1300 crossflow engine [681f], so that might be ok for hillclimbs/sprints, but not for racing...[not homologated with that engine] ...do you know if the 1300 ppre-crossflow and crossflow [681f block] cranks are interchangeable?
Try this weeks classic car weekly
hi.. my local newsagent doesn't stock classic car weekly....is there an ad in there I should see? should I try harder to find a copy?
hi neil... just a note to say thanks for the 'buysellcortina' link...have managed to find a complete original '66 mkII cortina 1300 pre-xflow.. with block no 2730...chap says it's low mileage, but will check it over anyway....thanks again for your help and advice! maybe I can call on you again?! i.e. do you know if there is a separate workshop manual for this model? if so, it's probably rare.....thanks fred
not sure if this is any decent advice or not.
im building a 1300 pre crossflow from a x/flow block.
Im using 1100 x/flow rods, which are 4.85mm longer than 1300 xflow rods. using the standard 1300 crank this brings the tops of the pistons (pre crossflow pistons) approx 2mm proud of the block. so if you can get hold of a complete 1300 bottom end, and you are able to use it with all the regulations, then use 1100 rods
thanks robyn.....still a bit mystified..I thought that the 2733 block would be/have a crossflow head, not a pre-crossflow......am I wrong?
Thought i would resurrect this thread with some details on one of the engines in question - the 2737e block is the original crossflow block for the 1600 mk2 cortina (and possibly amongst others like the mk1 caori of the same time)
The engine number 2731 refers to a 1500 pre-crossflow which is a solid crank with 5 bearings and 6 bolt clutch fixing. It also came with rubber half moon sump gaskets and not the cork ones found on earlier engines (which leaked constantly).
This engine was found only for a very short time in the mk2 series 1 cortina before the car went to series 2 and the 1600 crossflow (aswell as other capacities). From the design of the 2731 engine (not considering block thickness) it would appear that it fits chronologically between the 120e and 701m blocks. The better 701m blocks were found on the later mk2cortina lotus and mk1 lotus escort and had square mains caps and large cam followers so would have been as strong as a crossflow block and therefore being a better basis for the twin cam engine.
The 2731 would be a good alternative to building a nice Lotus engine without the need for buying a Lotus block.
All i've got to do now is find a nice Lotus twin cam head!
Last edited by HonkyWhiteTrash; 30-01-2011 at 15:29.
I have a nice 27306015 that I’ve removed from a Corsair that’s is for sale
Thanks
Yes I realised that just thought I’d put it out there
I have a 2730 block and crank / rods if you are still after one. Best contact is info@pamotorsport.com
Best regards
Peter
Was sold last Monday !!!
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