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

[david_white]

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

Cheers mate, certainly doing my best to get it done.
After some shopping today it now means that I have a new HP 2wd oil pump, 4x4 mahle turbo pistons and I have fitted a new 3 bar map sensor, amal valve and a few other little bits. Not many bits of the puzzle missing now, just need to get it all up to Graham.
Getting some nice bits made by Doug @ G19 too which will certainly be the icing on the cake...

[alex savill]

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

blimey dave, shes coming on lovely now, get the wooshy wooshy on it and lets go racing will be good to see her out on track again and getting her ready for a weekend of thrashing

[sambo]

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

Very cool car! Love a 3dr and this is the knackers!
A lovely clean build.

[Hoogi]

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

Very interesting update Dave..............hope the new Engine spec all plays out.

Oh, and do like the new bonnet.

[robrs2]

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

Dont want to try and get the rear 1/4 windows out, as the trims are mint. Heard they fetch a bit of money these days. Also looking out for some wide 17" 8 to 9". Seems like yours fit the arches nice.

[david_white]

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

Ive just found a mk1 hatch. Think I'll lighten up the steel one. Not going to light weight on mine as its still got the glass windows in. All the body kit and bumper are now fiberglass. Was going to get a fiberglass bonnet too but they are not cheap.

My bonnet is also single skin from smith and deakin, wasnt too dear but neither panels have much strength, fine for a racer though. I have a spare metal tailgate with glass if you ever need it.
Cut the inners out and maybe add some vent holes to the bonnet and the metal panels will be pretty light fit perspex if you want to save a chunk of weight though

[robrs2]

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

Ive just found a mk1 hatch. Think I'll lighten up the steel one. Not going to light weight on mine as its still got the glass windows in. All the body kit and bumper are now fiberglass. Was going to get a fiberglass bonnet too but they are not cheap.

[david_white]

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

How much does it weight now?

Is the hatch fiberglass if so where from?

Car is around 1000kg, hatch is skin only from smith and deakin, they also do internals but I didnt use std hinges or struts.

[david_white]

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

Thanks guys, really appreciate the comments.
Getting little bits done each day so its getting there. Just need to finalise a couple of bits of engine spec then progress should speed up. Mainly we need to decide what size pistons to use in which block as i am only allowed around +.50 i think which is bigger than one block and the other is 93mm which is way too big for class B.
Need to chose make of pistons too, mahle, accralite or wossner. Mahles look great value but not sure if they'll take cams if we fit them at a later date?

[FrEdOoOo]

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

Great to see updates Dave

The car is stunning!!!!

[david_white]

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

Great to see an update Dave as always enjoy your way of thinking when building your cars as you seem to have a way of getting the most bang out of every buck

Well theres not as many bucks around these days Ian so you gotta make them count! lol

[105Ian]

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

Great to see an update Dave as always enjoy your way of thinking when building your cars as you seem to have a way of getting the most bang out of every buck

[david_white]

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

Current set up with the mocked up engine bay;





Once I have a turbo I can refit exhaust system and make a heat shield.

Any pointers on installation of the turbo lump appreciated, I'm still learning

[robrs2]

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

How much does it weight now?

Is the hatch fiberglass if so where from?

[david_white]

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

Apart from a bit of bodywork the other main change has been with the engine.
We were struggling a little bit to find a decent spec for the NA YB that wouldn't break the bank. It seems that much more than 230 bhp and they are mega money and a huge amount of machining. Apart from not being fair on Graham to have to do so much extra work I felt that the build would be a bit too bespoke and really a one shot deal. We would have got a certain amount of power and that would be it, any improvements would have been hugely expensive and essentially back to square one.
After much thought I have decided the only way to get the car back on track, just as driveable as before and within budget is to go for a low-ish power turbo YB.
This isn't a second best plan, I genuinely think less will be more and 300 hp give or take will give me such a tractable car that it will trouble the big power boys around and out of the bends and hopefully keep up with the quick NA cars. By keeping power sensible we aim to get a very responsive, torquey and reliable package and can hopefully use most of the parts we already have.

Rough breakdown of the spec we are planning is basicaly; Pinto 'Linford' bottom end with its crank, race flywheel and pulley setup (all lighter than YB), cossie rods, turbo pistons (to be decided), ported 4x4 head, std cams (probably), 'Doug' wet sump, 2wd inlet and exhaust and T34 turbo. Bit of a hybrid but you wouldn't expect it to be too normal after all.