Tomei Japan have contacted HR to get the word out about their plans to develop a 5A-G kit. They have blueprint designs for the crank and conrods already but are in desperate need of more information on possible potential customer requests!
So Tomei need to know which will be more popular: NA or Forced Induction (if they get more FI piston requests they might make specialised FI engine kits)
Also what approx target compression ratio you guys are after and with what type of camshafts the proposed engine of yours would use? (degree specs and cam lift numbers please, the more info the better the result! Valve Timing specs too!)
What 4A-G type would you prefer the kits be made for? 16V AE86, 16V AE92 or 20V AE101 AE111 engines.
They are proposing using a crank design of 81mm stroke. Does this suffice with you guys or are you after something a little different?
Please get behind us on this so we can generate more aftermarket parts for the AE86. We need to support these companies who continue to show our AE86 the love – even after so many many years.
Hit the forum thread and vote in the poll and make your views heard! Get the parts YOU want!
Entries (RSS)
December 16th, 2008 at 11:20 am
Sounds cool, would be nice in a 20v,, have they any idea of price?
Not cheap im sure by the time you would have the whole kit bought.
December 16th, 2008 at 4:47 pm
I think they need to do a longer stroke than 81.00mm, if you use an 81.00mm diam piston with the 81.00mm stroke crank it gives you 1670cc. This kit will probably cost a heap of cash and I feel that the gain in capacity for such an outlay is not much. maybe it should be the same stroke as the HKS kit….83.00mm which when using 81.00 diam pistons will give 1710cc.
Then when you use 82.00mm or even 83.00mm pistons an even bigger capacity gain is notted….close to 1800cc
December 17th, 2008 at 12:05 pm
no the original bigport is the best and most fun!
December 29th, 2008 at 9:57 am
I’d prefer it built for the 16v. I don’t plan on parking my car much so my target C/R is 12.1. I also agree w/ JC on the dimensions of the stroker kit. anything below that pointless.
January 20th, 2009 at 11:26 am
This would be awsome, I think this could be put to good use for the N/A!!! 16v and 20v engines as they do lack tourqe. There should be a variety of pistons to suit different compression ratios and bore sizes, for both the 16 and 20v heads. Not everyone wants to build the same engine so there has to be variety. I dont think an 81mm stroke would be worth the cost of this kit, I would suggest an 83-85mm stroke if possble. This kit should be well balanced as people will be spinning these engines to high rpm’s. The crankshaft, connecting rods, and pistons should all be forged pieces.
If i was to buy this kit it would be fitted in a N/A, high rpm, 16v, for racing purposes only. I would run large cams, 310 duration-11mm lift (both in-ex), 106 degree lobe center, and compression around 12.5 to 1, so 100+ octane fuel is used. It needs to be affordable, not may people running 4ag’s are loaded with cash. If they come up with experimental parts, id be happy to test them out in my race engine for them
February 28th, 2009 at 11:05 pm
the rod to stroke ratio of a 4ag is alread far from favorable stock so they should make it suit the 7a block
April 27th, 2009 at 3:19 pm
16 Valve bigport and small port
produce both, and hurry
August 22nd, 2009 at 3:38 am
all this comments are useless specially from people who never purchased or build a 10000rpm engine. YOU ARE TALKIN TO ENGINEERS with a good reputation,you just need to tell them NA or FI.
i believe they can build what ever they want but they aint gonna put money in a kit that never gonna be sold to compensate the cost of the 1st kit manufacture
IF u ever build a highRPM engine and now a lil bit of tech and engine behavior
u can reply with numbers (better displacement and better comp ratio)
I LOVE NA in a light engine into an AE8#
a person who set a turbo to a 4age is simply a lasy and scared driver
NA all the way(a max of 12:1 and more stroke with a long conrod)
thats it ,after that ,the enginners will balance all we need,they arent forum guys like us,they are experts, and they KNOW a well respected enthusiast will use a NA 4age between std and race fuel high rev 4age($$$$).period
August 23rd, 2009 at 5:41 am
I prefer 16v aplication but it will be great a 20v aplication also.