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New Head Spec Longmans GRP A:
205 1600 Head. Ported and polished 27.3cc Chambers 42.5mm Inlet Valves (+1mm) Piper 495 cam (timed to std marks) Valve clearances: Inlet = 0.008" - 0.009" Exhaust = 0.010" - 0.011" Compresion ratio 11.0 - 1 Omega Forged 83.5mm Pistons Cometic steel head gasket Chamber volume of 27.3 Will update more info as i get it of the rest |
Exciting times ahead
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Update: 16/11/09
Right complete change ahead....im putting an MI-16 engine in the 205...will be around 200bhp for the 1st year then will strip it and get some headwork and higher lift cams put in at the end of next year... Going to run it on my twin 45's with some cams possibly fast road cams on std hydraulic lifters.... Will go very well paired to my BE3 with 4.8 final drive....200bhp doesnt sound loads but in a 205 with lots of torque it will be a good starting ground...my final aim will be around 250bhp as thats the limit i want from a 205 as it will be dangerous... Also just won some wilwood 4 pots on ebay :) think i need them now :) ![]() |
Whats up with the original engine plans?
The MI16 will still go well obviously.. Brakes are definatly a good call, what you running currently? |
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Yes the MI-16 will be VERY quick...im currently running 306 GTI-6 283mm calipers and discs...which are now for sale if you know anyone ;) |
Plans sound awesome!!
Surely the mi16 will be pretty reliable so should do you well!! 200bhp with the 4.8FD will be scary enough !! |
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And yes the acceleration will be fun to say the least :y: |
wilwood 4pots are epic win :D
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Receipt from rally design of £560 i won them for £291 on ebay not bad me thinks. |
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decent price indeed! i got mine for £350 2nd hand with discs and new pads
but £291 is very nice ;) |
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yep now you want some hard compound tyres, giving the mess you've been making of mediums with the 1.6 lol
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your idea of knackered is full canvas on show, can't regroove that! lol
anyway what pads you gonna run , don't tell me 1144, fast road, they will be s**t after a couple of stage miles the way you work behind the wheel, so it may be better option to go for a rally raid set up for cross country, cause thats where ya will be, in the weeds lol |
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I use 1144s with my Wilwoods and they are great for the road. BUT Ive read that after given some abuse they do fade pretty badly!
Toad is running 1155s I think with his Hi Specs and really rates them. Shame on the engine build, but the new plans sound great also. The 4.8 FD sounds pretty mental! |
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Yes the 4.8 will make it an animal :p |
Yea obviously try them and see how you get on.
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You disappoint me !
Mi16 :( |
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Update: 17/11/09
Found an engine thats done 70k and come out of a 205 dimma project....i won it on ebay for £231 lol Thats with everything inc gearbox etc Will be using my BE3 box with gripper diff and 4.8 FD so will be rapid...going to put my carbs on it and going to leave the cams std for now as it will be in the 5's to 60 anyway... Will fully strip it and change headgasket, big end bearings, water pump, cambelt etc etc Going to use a peugeot sport sump baffle with a few modifications to try stop oil surge... Will post up pics when i have it... |
lol, I can't quite work out whether this is more of a bargain than the 4 pots !!
Look forward to pictures !! |
16v makes sene ;)
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[QUOTE=MJRallying;3848320]Update: 17/11/09
some people fall in s**t and come out smelling of rose's, your one! lol |
good choice in going 16v. Realistically you will have about 175-180bhp with a standard engine and throttlebodies/carbs. I've not seen more than that on realistic rolling roads. There are a few disadvantages to using the Mi16 though and the main one is going to be oil surge. The problem is the large open head design meaning it can hold a lot of oil. The drainage is simply not adequate for very high speed left hand corners.
The sump should work though I would suggest tapping new drainage holes in the back of the head (in the corners) and running additional drainage hoses back to the sump. Newer heads like on the gti-6 have two separate compartments for the inlet and exhaust valvetrain which eliminated this issue. |
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[QUOTE=pugmender;3849790] Quote:
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Yes i agree with your figures, ive spoken to hiflowheads and im getting some decent cams fitted and head modified to suit so hopefully around 190-200bhp rr depending... The oil surge issue seems to be solved by the trap door design in the sump....it allows so much through then shuts apparently a few people who race mi16's says this cured it. Plus rallying isnt anything like the grip you have all the time on a track (well not as much) |
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I will put pics up asap. |
[QUOTE=MJRallying;3850732];)
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Another solution is to run solid lifters and followers as you tend to run a oilway restrictor, but this is expensive.Theres quite simply bags of information on the oil problems of this engine so i'd suggest you do a lot of research. I know these engines very well and my race engine is getting the gti-6 head as its far superior and will eliminate the problem. |
[QUOTE=KamRacing;3850972]
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thats sick :D
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Cant wait to get the old Mi16 in the 205..Gona be awesome..
Makesure you cam it too asap, i tend to get bored out on the stages, the car needs some serious poke.. ;) |
[QUOTE=KamRacing;3850552]
regarding the oil starvation issue of the mi 16, is this a case of less being better?, what i'm about to say may be wrong but here goes, the mi 16 head indeed holds a lot of oil, partially due to the poor return oilways, so we need to have a method of keeping enough oil in the sump, so by fitting an uprated oil pump spring we are in my thinking, pumping more oil to the head where it will struggle to return to the sump. we are therefore fitting a pts sump baffle, standard oil pump,24 row cooler, and not using zero grade oil, we will use 10w 40. whether this works we shall see, but i see no point in pumping oil to the head that can't get back, we will also modify the breather system and use a catch tank. |
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