JonnyBravo

Look forward to seeing it being used in anger

RickyLee53

Garage19, I'm running a .82 exh housing.

Chip, I wondered if you would silence the screamer seperate, or flow into the exhaust.

Just thought afterwards, my civic turbo runs an external 38mm (overkill) but the gate positioning is very poor, this still holds boost perfectly, but obviously its a smaller engine (1.6) and much lower powered.

I'm running Arais pistons as well, what piston to bore clearance did you go for, and what piston speeds do you think you will see when its built?

Chip

iTrader: (3)

86mm stroke, I wont be able to rev it past 8500rpm unless I drysump it which im not intending at the moment.


Ive gone for a 4.5 thou piston to bore clearance, on an 86.75mm bore.

Thats a little higher than is typical, but I want it not to seize up if I squirt a little bit of gas into it now and then

blackerst

yea chip wot about closing the boot

Chip

iTrader: (3)

Exhaust has now moved, and ive cut a hole in the boot for it to come out, so the boot shuts now, although it needs some serious tidying up as its just a dirty great angle ground square hole its coming out currently!

I'll sort it, just got more important things to do first, like putting pinch bolts in the bottom ball joints for example

blackerst

its all coming together now chip. is ur nova back home now. im free this weekend so il come help you as i have been neglecting you latley m8

Chip

iTrader: (3)

LOL @ Neglecting. I blame the worlds most unreliable EVO


Yes mate, this weekend would be cool.

blackerst

i blame the evo but blame the owner of it more so much for jap quality

RickyLee53

I run 4 thou, its a bit slappy when cold though.

Chip

iTrader: (3)

I was genuinely surprised at how quiet mine is, no slap at all, but obviously its not even run in yet so will get looser when the bores scrub themselves flat on the rings.

Not bothered at all by how it sounds when cold though obviously on this sort of car, its just all about stopping it blow up!

RickyLee53

Same with me really, but the side loading doesn't help with mine been a stroker. I was just wondering weather it was the piston's that are pretty noisy anyway.

Chip

iTrader: (3)

I'll let you know when mine are run in, lol

jb fletch

iTrader: (1)

Chip,

Will your GT35 not surge on a .63 ? ? ? Has the head been majorly flowed for it then ? ? ?

Jus curious !

Keep the piccy's coming, lovin this Nova (never thought I'd say that ! )

jb

Chip

iTrader: (3)

Head is a pretty large spec, although the valves themselves are only 1mm oversized, which is still 1mm smaller than cossie ones.

Its got a very good port job on it though, and im not expecting it to surge like on a YB as its a better shape to begin with anyway IMHO

Im also NOT after massive midrange torque anyway (due to traction) and thats when you tend to get surge, when you have huge boost at medium rpm.

Head was done by Neil Roper developments (Neil is Ex Hart formula 1 and a bit of a legend with RS200 heads as he did the works cars, so good background to come from)

jb fletch

iTrader: (1)

Argh ok cool, so if it does surge your'll jus cap it till the engine speed builds enough to cope ?

Traction is a problem for me too but thats what I seem to like the most, the car lighting up the tyres in the 1st 3 gears wet or dry & no clutch tricks

So midrange torque is important to me !

So are you gonna run 2 silenced exhausts, one for screamer & the other for engine or link em both together ? ? ?

jb

Chip

iTrader: (3)

Yes if it happens, but Im pretty confident it wont anyway.


LOL, mine is a bit too unpredictable when sideways for me to want to be doing it in 3rd.

Into the 1 exhaust just before the silencer.

for track days im going to run an extra silencer on the outside of the car across the boot.

Garage19

They will be linked together before the first silencer box. A second silencer box is being made into an external slip on component so that it can be fitted at trackdays where noise is an issue.

Garage19

Hey chip,

Ass well as weling up your CC on sat i've just been asked told the secret squirell top spec LET inlet will be ready for the first non cast protype to be welded up.

XRT_si

iTrader: (2)

Is this the mad spec engine that was due to go in your old mini some time ago?

Also can I ask what is your cooling set up for the engine? Rad mounted at front i am assuming? Trying to sort mine out next few days. Is yours just standard i.e. Longer pipes and thats it? Just wondering if there will be any issues going from front to back in terms of the water pump, or extra capacity or air locks? cheers

Chip

iTrader: (3)

Nice one, let me know what its like

Chip

iTrader: (3)

Standard water pump works fine, tried and tested on 2 previous engines in there, and on this one its under less strain as the turbo is on a seperate circuit anyway with an electric pump.

And yes, its the engine I was going to put in my mini, but Ive decided to stick to about 250bhp for that.

blackerst

are you sure 250bhp is gonna be enough in a mini chip

Chip

iTrader: (3)

Yeah, im not worried about that one being particularly quick in a straight line, im building it for the corners not the straights mainly anyway (well as much as is possible given the contraint of being front engined)

glancy2081

exellent work by doug and chip here is the 4.5 thou the recomended size by the piston supplier chip

Chip

iTrader: (3)

No, its more than they recomend mate, Ive made my own decision on what size to go to.

Mr C

iTrader: (2)

good project this, I like the solutions you have come up with to problems- inlet, steering arms etc

Chip

iTrader: (3)

Designing how to do those bits are the bits of the project Ive enjoyed the most

purplemonster

nice car chip

i saw the car years ago when it was built

keep up the good work

Chip

iTrader: (3)

Frighening amount still to do mate.

3 pages of A4 on my "things still to do before bedford trackday" list at the moment

Charlie Chalk

iTrader: (1)

N/A or Turbo?!

Chip

iTrader: (3)

Turbo mate, the old engine from my nova in fact, I decided to swap them over essentially (although obvously the mini was never going to get the inlet or exhaust manifolds i have on this engine now!).

Charlie Chalk

iTrader: (1)

Ah ok,

What you gonna do about mounting a Rad in the front? Or is it going in the back....

Chip

iTrader: (3)

On the mini?
Intercooler in the front but rad in the back I expect mate, not all decided for certain yet though, will work it out as im going along.

Chip

iTrader: (3)

Here is a picture showing the exhaust mocked up in its final location before doug finally TIGed it exactly where I wanted sadly its a picture in the dark but still pretty easy to see.




And here is, well, im not sure how to describe it TBH, LOL

Disabled Account

Well, if it was a beauty contest the exhaust system would win by a mile

===========================================

"Alas poor Yorick, I knew him well"

Chip

iTrader: (3)

xr-stu

you being a retard





must admit, that exhuast does look a bit better than our effort from before

Chip

iTrader: (3)

I resemble that comment!

andyt

iTrader: (1)

love this car

blackerst

u still on for working on the nova tomorrow chip