DW's (new?) Sierra 3dr YB race car

[david_white]

Re: DW's (new?) Sierra N/A PINTO race car

Have now fitted some 75mm radiused air intakes into the headlamp perspex covers. The o/s one feeds directly into the airbox and the n/s one feeds some handy cool air to my now relocated remote oil filter.

The oil filter is located to allow the best possible pipe runs from the engine to the oil cooler which I have fitted under the inner wing. The cooler gets air from the n/s spotlamp apature and isnt actually that close to the tyre as the pic suggests. I will be fitting a mesh and plastic guard to the cooler just to be sure that no stones or rubber off the tyre will hit it.

[Hoogi]

Re: DW's (new?) Sierra N/A PINTO race car

Hi Dave,

Cars looking superb.......going to be so much better with a YB.

Want to pick your brain if I can ?

The bottom outlet on the Header Tank, where does that lead to..........the tube that runs next to the bottom of the rad ? If so where does that lead to ????

Many thanks,
Hoogi

[joe GSM]

Re: DW's (new?) Sierra N/A PINTO race car

leads to the bottom hose steve

[PIG]

Re: DW's (new?) Sierra N/A PINTO race car

have you an engine now?ive not had a call back thats all

[david_white]

Re: DW's (new?) Sierra N/A PINTO race car

have you an engine now?ive not had a call back thats all

Sorry mate keep forgetting to call you. We are trying to work out the spec of engine we need now. Willl call you later mate.

[david_white]

Re: DW's (new?) Sierra N/A PINTO race car

Didn't get much time to work on the car this week but did manage to find a decent exhaust system on ebay. Looked like crap but after a bit of a clean up looks quite smart. I think it is a twin box scorpion that has had the middle box removed, and it should be ideal.
Just need to make some brackets for the car now as I think I cut the centre ones off last year as part of the weight loss scheme



Should be picking up a 2wd sump tomorrow too so we are gradually getting there

[markb]

Re: DW's (new?) Sierra N/A PINTO race car

It'll probbaly be pretty loud i reckon Dave.. plus have you checked how much the system narrows going through the silencer?
I've heard several people saying that the one to get is mongoose as they don't have the same narrowing/restriction going through the back box.
Obviously it's never going to be as big as the tail pipe but iirc the 2 1/2 inch scorpion narrows to somethign like 1 1/2 inch through the silencer which can cause problems.

[Joe-Tait]

Re: DW's (new?) Sierra N/A PINTO race car

Nice progress Dave, when will you start the engine build?

Iam interested to know what budget and spec the engine will be built too

[Graham]

Re: DW's (new?) Sierra N/A PINTO race car

[QUOTE] iirc the 2 1/2 inch scorpion narrows to somethign like 1 1/2 inch through the silencer which can cause problems./[QUOTE]

i've come across that too

[Graham]

Re: DW's (new?) Sierra N/A PINTO race car

Nice progress Dave, when will you start the engine build?

Iam interested to know what budget and spec the engine will be built too

daves still got his thinking cap on,

its unlikely he will go with a class B car as that will require the best part of 500bhp with all the costs and unreliability issues that go with it to run anywhere near the front of the class,

new options for the championship for 2011 are to run with a restricter and a minimum weight limit,

34mm restricter 1000kgs min weight
36mm restricter 1100kgs min weight

daves car will probably be smack in the middle of the two weight limits, power to weight wise there's not much to choose between the two options, although the lighter one will benefit in corner speed and braking, the heavier one would produce higher top speeds, but probably be ultimately slower in lap times,

so one question is does he bolt some weight back into the car or look hard to takes some more out again?????

[4parajon]

Re: DW's (new?) Sierra N/A PINTO race car

Let me know if I can be of help with the zorst tubing Dave

[david_white]

Re: DW's (new?) Sierra N/A PINTO race car

It'll probbaly be pretty loud i reckon Dave.. plus have you checked how much the system narrows going through the silencer?
I've heard several people saying that the one to get is mongoose as they don't have the same narrowing/restriction going through the back box.
Obviously it's never going to be as big as the tail pipe but iirc the 2 1/2 inch scorpion narrows to somethign like 1 1/2 inch through the silencer which can cause problems.

Not too worried at the minute Mark as the system is 3" all the way through and should be plenty big enough for the power we need. The rear box will ultimately get replaced with a re-packable silencer anyway but at least we will already have all of the bends etc in place.
As for noise my more revvy NA engine on TBs ended up with a single box and was ok, so with lower revs and a turbo I should be fine.

[david_white]

Re: DW's (new?) Sierra N/A PINTO race car

Nice progress Dave, when will you start the engine build?

Iam interested to know what budget and spec the engine will be built too

As Graham says we are still deciding final spec but once we get going it shouldn't take too long with a bit of luck.
I think the 1100kg route would ultimately be slightly slower but slightly easier to do as I would have a bit more power on tap and I wouldn't be breaking my neck trying to lighten the car by 50+kg, however I can see us trying to use the smaller restrictor as you always prefer to be lightening a race car rather than adding lead to the floor.

As for budget, lets just say that i might have to do the washing up at Grahams for a year to pay the bills

[david_white]

Re: DW's (new?) Sierra N/A PINTO race car

My new sump after a quick dip in the wash tank at work

[Roadsport]

Re: DW's (new?) Sierra N/A PINTO race car

As Graham says we are still deciding final spec but once we get going it shouldn't take too long with a bit of luck.
I think the 1100kg route would ultimately be slightly slower but slightly easier to do as I would have a bit more power on tap and I wouldn't be breaking my neck trying to lighten the car by 50+kg, however I can see us trying to use the smaller restrictor as you always prefer to be lightening a race car rather than adding lead to the floor.

As for budget, lets just say that i might have to do the washing up at Grahams for a year to pay the bills

Go for the alloy block.
Would be a nice touch in getting the car lighter and beneficial for the weight distribution.
Also you could choose a higher block if needed.
Not so budget friendly tough. But hey you only live once....