Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: niallypie on May 28, 2008, 07:54:25 PM

Title: 12a manifold
Post by: niallypie on May 28, 2008, 07:54:25 PM
hi i have a 12a with racing beat rap over manifold and dellorto 48 but have clearance issues in the special i am building, does anyone know of a side exit manifold or someone that could make that would take the 48?
cheers
nially
Title: 12a manifold
Post by: mpk490p on May 28, 2008, 07:56:32 PM
is yours like this one?
http://cgi.ebay.co.uk/MAZDA-ROTARY-12A-SIDEDRAUGHT-WEBER-MANIFOLD-RX2-RX3-RX7_W0QQitemZ230256405023QQihZ013QQcategoryZ33612QQrdZ1QQssPageNameZWD2VQQcmdZViewItemQQ_trksidZp1638Q2em122

Mark
Title: 12a manifold
Post by: niallypie on May 28, 2008, 08:02:37 PM
its like that one but two piece, go to http://www.racingbeat.com/FRmazda1.htm
for look. i will be selling it if i can get a side exit. if not i will have to cut some of my engine bay up to fit it in, dont want to do that if i can help it.
cheers
nially
Title: 12a manifold
Post by: mpk490p on May 28, 2008, 08:10:15 PM
i know the one you mean i have the same on my 45DCOE i have seen side exit ones but they are usually for 2 carbs, best bet would be to try rx7club.com (US) whats the problem with the one you have?
any pictures?

Mark
Title: 12a manifold
Post by: niallypie on May 28, 2008, 09:07:37 PM
ive put the engine in my hillman imp, it all fits snug, except i would have to cut into my rear parcel shelf and bring the carb intake through the top into the inside of the car. i would then have to build a box for it, firewall it and take an intake from one of the side windows -or- get a side intake manifold, see what i mean!
i will try and upload some old pics, and get some new this weekend
cheers
nially
Title: 12a manifold
Post by: mpk490p on May 28, 2008, 09:17:58 PM
ah didnt know is was going into a imp yes try the us pictures would be good though

Mark
Title: 12a manifold
Post by: niallypie on May 28, 2008, 09:20:22 PM
i cant find how to do upload pics? help
Title: 12a manifold
Post by: mpk490p on May 28, 2008, 09:25:19 PM
down the bottom in manage attachments
found this thread
http://www.rx7club.com/forum/showthread.php?t=691561&highlight=old+style+manifolds
and the picture below


Atkins rotary list them for a 13b 4port and 12a half way down
http://www.atkinsrotary.com/store/home.php?cat=589

Mark
Title: 12a manifold
Post by: niallypie on May 29, 2008, 10:38:37 AM
thanks for that, i should have asked ages ago, i thought the racing beat manifold was the best option at time. ive emailed atkins to see if it takes the dellorto carb, if so i will sell the racing beat one and buy the atkins, job done. it will look so much better and no one will have a clue what lurking below.
ill let you know how i get on.
nially
Title: 12a manifold
Post by: BlitzBoy on May 29, 2008, 10:44:38 AM
Rotary in a Hillman Imp, now that I have to see, need pics my man
Title: 12a manifold
Post by: mpk490p on May 29, 2008, 05:30:20 PM
send the pictures to mpk490p@hotmail.com and i will post them up:chat

Mark
Title: 12a manifold
Post by: mpk490p on May 29, 2008, 09:42:39 PM
rotary IMP wicked
Title: 12a manifold
Post by: niallypie on May 30, 2008, 12:38:00 PM
i will get more pics at weekend, i have done a good bit more since these pics. its mated to a type 2 vw box with kennedy adapter plate and stage two clutch. ive got most of the coolant plumbing in now. do you think i should have the oil cooler at the front or could i get away with keeping it at back with an electric fan?
cheers
nially
Title: 12a manifold
Post by: mpk490p on May 30, 2008, 03:07:11 PM
cooling is key as the rotary does get rather hot, i would stick it up front if you can (persume you rad is going there?) you may get away with it in the rear but rather up front than change it later

Mark
Title: 12a manifold
Post by: RotorHeid on May 31, 2008, 09:39:01 AM
Good work,
Leave RB manifold and dellorto 48 in and better to firewall/plasticwindow from the back your seat as few imp\'s bike engined doing this way,
less work and save the cost of new carb,  and hope to see the imp in action in the hill.;)
Title: 12a manifold
Post by: niallypie on May 31, 2008, 03:45:11 PM
have you got an imp rotaheid, you in scotland?
i just feel if i cut the rear parcel shelf i have to add in extra strength=extra weight and as i said i want to maintain an old school racer look with not much clue to whats been done. i emailed atkins and they said the 48 dellorto ive got fits perfect so at the mo it looks the ticket.
you hillclimb or sprint? i am five minutes from kames sprint track and want to race at dounne and fintry.
cheers
nially
Title: 12a manifold
Post by: RotorHeid on May 31, 2008, 04:56:35 PM
No, no imp and Yes, frae Aberdeen
I know Gerry frae Wick, he\'s built Rotary imp and used to do this forum but don\'t know his member list.
Yes, both since1992 with a FC 13Bbridgeports until it\'s blown up at Alford sprint in Oct 2006.
Awaiting for engine\'s part for PP motor( don\'t want go the "turbo") and Fintray\'s 5 min away frae me as well.
Good to see another rotary in Scotland cos it\'s nobody raced the rotary for years(just me!! )
Used have a 48 delly/racing beat for 13B 6ports( one of the best engine mazda ever made after TurboII/12A) but sold the items to MRC\'s member here.
hope to race the FC next year at Doune hillclimbs, never been there as lots of folks adviced me to go there  but the Doune\'s famous "the wall" can wreck the car in second!!.
Here\'s greamewight\'s Imp
Predator

 "Only real men, racing up the garden path";)
Title: 12a manifold
Post by: niallypie on May 31, 2008, 08:22:15 PM
i didnt know someone had beat me to it, with the rotary, would be good if i could find him for some advice. ive seen that imp from doune before, fairly motering eh!
ive taken some more pics will try and upload tonight.
cheers
nially