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PostPosted: Tue Feb 18, 2014 10:11 am 
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Starting plans to build 2 new spec Z for 2015, what are the pros and cons for each model?

how is the parody between the cars?

any ideas, comments will help.


thanks
HP


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PostPosted: Tue Feb 18, 2014 7:59 pm 
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Location: redwood city, california
I have a car 90% ready if you are interested.
2003
One owner 60k miles.

Rafael
925-367-3535

[


quote="hpimola"]Starting plans to build 2 new spec Z for 2015, what are the pros and cons for each model?

how is the parody between the cars?

any ideas, comments will help.


thanks
HP[/quote]


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PostPosted: Wed Feb 19, 2014 1:55 pm 
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Any HR engined car is prefered...the simple fact is that they will always have more HP than the other models... :mrgreen:

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John Evans
john.evans@partsatlanta.com
PartsAtlanta.com
SE Spec Z Series Director


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PostPosted: Wed Feb 19, 2014 3:12 pm 
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laze1 wrote:
Any HR engined car is prefered...the simple fact is that they will always have more HP than the other models... :mrgreen:


I'm not quite sure that the HR is the "preferred" model. After having one of each model. I would say the DE or the Revup motor is just as competitive as the Hr if not better. You got to remember the HR gets penalized with a weight of 3400# which is a lot of wear on brakes and tires etc.. making it harder to drive in longer races. As the class evolves I see all three models being just as competitive as the next one.

Take for example this past weekend we had an HR, DE, and Revup in the top 3 and each one ran a tight race all within a few hundredths of a second from each other.

Plus if you are looking for cost savings on the two builds definitely pickup a later model car versus a 15K donor HR.

Just my 2 cents.

Jay Pellegrini III
Team Pelle Motorsports


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PostPosted: Wed Feb 19, 2014 3:39 pm 
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All good points..and you would definitly be the best resource.

But If I had to do it again...AND MONEY WAS NO OBJECT...I would go with the strongest motor available :mrgreen: And being that Road Atlanta is my home track...HP will win you a few races there.

Barber is a good torque/handeling/braking track, so that was a good eqaulizer...so all the cars where pretty equal where equal drivers had the wheel. Even new tires verses old tires didn't seem to make a big difference...

*I was actaully surprised that the Z1 Nismo was not quicker in the short striaghts. He didn't pull any of the fast cars at all...I was VERY surprised :shock:

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John Evans
john.evans@partsatlanta.com
PartsAtlanta.com
SE Spec Z Series Director


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PostPosted: Fri Feb 21, 2014 10:01 am 
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so if a good donor can be found for a fair price, the HR would be the one to start with?

is one a 5spd vs 6spd?

redline difference?

looking at the weight and horsepower ratios, it would seem the DE cars would be the one to build, so something needs to be a significant improvement on the HR to justify the significant weight gain...


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PostPosted: Fri Feb 21, 2014 9:56 pm 
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Japelle wrote:
I'm not quite sure that the HR is the "preferred" model. After having one of each model. I would say the DE or the Revup motor is just as competitive as the Hr if not better. You got to remember the HR gets penalized with a weight of 3400# which is a lot of wear on brakes and tires etc.. making it harder to drive in longer races. As the class evolves I see all three models being just as competitive as the next one.


I agree with Jay. If I were to start over I would stick with an early model DE car. I think lighter is the way to go.

There should never be a "car to have in order to win" in a spec series, especially if the donor is the most expensive model, e.g. the '07-'08 HR-powered cars. Fortunately, this has not shown to be the case with Spec Z. I think it's pretty cool that a base 2003 car with a 90K mile engine can be nationally competitive in this series!

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David Dirks
Spec Z #76
Rocky Mountain Spec Z Director
2013 Spec Z National Champion


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PostPosted: Sat Feb 22, 2014 6:01 am 
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Jay and David at Top tier national level drivers who have the Wins to show for it...these guys get 100% out of a car (I can't :D )

So I am OFFICIALLY changing my opinion...a well built Lightweight "DE" car is the best price to performance choice,

David Dirks actually won the 2013 Spec Z National Championship in a DE car...by a pretty good margin on a high speed track (Miller) so enough said

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John Evans
john.evans@partsatlanta.com
PartsAtlanta.com
SE Spec Z Series Director


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PostPosted: Mon Feb 24, 2014 7:38 am 
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thanks for the tips. i have raced a spec series for a few years, although parity is the goal, some cars offer an advantage (albeit driver / track specific). so i was looking for opinions, rather then a definitive model.

is the track car the only one with the LSD and brembo brakes?

any preference of nismo LSD vs Wave?

thanks for the input

hp


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PostPosted: Mon Feb 24, 2014 8:28 am 
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hpimola wrote:
thanks for the tips. i have raced a spec series for a few years, although parity is the goal, some cars offer an advantage (albeit driver / track specific). so i was looking for opinions, rather then a definitive model.

is the track car the only one with the LSD and brembo brakes?

any preference of nismo LSD vs Wave?

thanks for the input

hp



I'm running an '03 base model (added Brembos for <$1000 and vLSD for <$400)
Car is competitive as proven at Barber in straights & brake zones - no HR or DE pulled me for sure. Driver is another question :)

I think starting with ANY manual transmission Z is fine (and base may be a more cost effective starting point) - brake & diff changes are easy.

I may move to the WT diff in the future when my vLSD gives out.... but you also need a cooler for those or they will not last - seems OK with the guys who now have coolers & latest WT updates. With HP & weight enforcement the cars are all surprisingly close - if we ever get longer races the HRs will certainly pay a tire/brake penalty due to the extra weight they carry.

Last season I would have said (and did say) HR was the ticket.... so far this year I'm glad I have the DE....


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