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richie
Fordmods Stock as a Rock
Age:55
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Location: perth WA, Australia
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 Posted: Thu May 01, 2008 2:03 pm Post subject: New 331 Build for Richie |
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Just embarking on a new project - A 331 based on V8 Supercar components - around 600fwhp NA that is streetable.
The build will be based on either Ford R302 Block or Dart Sportsman - just waiting to see if a R302 can be "obtained".
I have "obtained" the following components:
The heads are 280cc intake runner Yates with Titanium Valves & Retainers ( current supercar heads as at August 2007), RR's & mounting block, intake plates, 8 TB setup, Con Rods & pistons, lightened Harrop crank with Honda size journals, Timing belt setup plus other bits & pieces. Will scrap the valves in favor of stainless as titanium is not the best for street.
Will be dry sumped, individual ignition coils.
The ECU is a Motec M800.
Now the problem is that this thing will rev to 7500rpm but I want to run a hydraulic roller cam to make it streetable. I cannot see myself changing a solid roller cam every 10,000km. The issue then is which hydraulic roller lifters. Most would become unstable by 6500rpm.
Any ideas?
Richie. |
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BOTTLEDUP
Fordmods Tyre Shredder
Age:29
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| Posted: Thu May 01, 2008 5:29 pm Post subject: |
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Richie Richie Richie.... How do you plan to make a 280cc intake runner 'streetable'...?
It will be a very interesting combo and no doubt make a great amount of power, but I've got my reservations as to whether it will be nice at low rpms. |
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skidder
Fordmods - Getting Side Ways
Age:19
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| Posted: Thu May 01, 2008 5:50 pm Post subject: |
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| BOTTLEDUP wrote: | Richie Richie Richie.... How do you plan to make a 280cc intake runner 'streetable'...?
It will be a very interesting combo and no doubt make a great amount of power, but I've got my reservations as to whether it will be nice at low rpms. |
haha...i doubt it would be close to nice at low rpms even if its streetable...I'm guessing it's not a daily though so this isn't a priority.
tough combo though, as for the cam i think you are correct in that you will have trouble with hydraulic lifters getting over 6500rpm, however its possible depending on the ramp rate/shape of lobes on your cam to get over 7000 without issues.
Regardless if you intend to take it over 6500 often your probably better to go with a solid cam. |
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Steady ED
Fordmods Addict
Age:22
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| Posted: Thu May 01, 2008 6:23 pm Post subject: |
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Top link skidder, thats some crazy seat pressures 
My el cheapo spring compressor would break trying to get them on  |
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richie
Fordmods Stock as a Rock
Age:55
Posts: 169
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Location: perth WA, Australia
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| Posted: Fri May 02, 2008 11:00 am Post subject: |
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Yep - top article, now have something to research.
I am told idle will be around 1100 - 1200 rpm.
Rich. |
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EBXR8380
Fordmods - Getting Side Ways
Age:54
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Location: Penrith NSW, Australia
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| Posted: Fri May 02, 2008 1:03 pm Post subject: |
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Ah go mild -sh solid cam...
The race solid cams wear due to profile...
Possibly requre custom cam ?? |
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banarcus
Fordmods - Getting Side Ways
Age:34
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Location: Kurri Kurri NSW, Australia
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| Posted: Fri May 02, 2008 8:53 pm Post subject: |
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| Could you get some intake tounges cast up to lessen the port volume? |
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MICKYYYY
Fordmods - Getting Side Ways
Age:25
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| Posted: Fri May 02, 2008 10:46 pm Post subject: cam |
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Thats some great info there
Im looking into building a 363ci dart block windsor and also want to run a hydrolic roller but ive also been told that may not be able to rev it past 6200-6500rpm if your lucky as some hydrolic roller cams only take 5800-6000rpm.
I want to get max hp out of my engine but still be streetable and use a hydrolic roller cam. |
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Macca
Moderator
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| Posted: Sun May 04, 2008 12:04 pm Post subject: Re: New 331 Build for Richie |
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| richie wrote: | | lightened Harrop crank with Honda size journals |
Excuse my ignorance but what is with the Honda size journals? |
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EBXR8380
Fordmods - Getting Side Ways
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| Posted: Sun May 04, 2008 8:55 pm Post subject: Re: New 331 Build for Richie |
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| Macca wrote: | | richie wrote: | | lightened Harrop crank with Honda size journals |
Excuse my ignorance but what is with the Honda size journals? |
s**t smaller.. They used this set up in Nascar for qualitying engines..
You can get titanium Honda rods through Eagle and custom Forged pistons to suit deck height..
http://www.hamotorsportsusa.com/eatirodsetb1.html
Go down to page 76.. They are 1.77 / 1.88 journals / 5.394 long
Part # EAGB778
http://www.eaglerod.com/2008%20Eagle%20catalog.pdf |
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MICKYYYY
Fordmods - Getting Side Ways
Age:25
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Location: Sydney NSW, Australia
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| Posted: Sun May 04, 2008 10:23 pm Post subject: engine |
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Geez this is going to be a mega dollar engine.
Whats the pro's of going for this sort of rotating assembly? |
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skidder
Fordmods - Getting Side Ways
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| Posted: Mon May 05, 2008 5:36 pm Post subject: Re: engine |
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| MICKYYYY wrote: | Geez this is going to be a mega dollar engine.
Whats the pro's of going for this sort of rotating assembly? |
shorter rods and high quality components mean it can be pushed harder, particularly in respect to revs....important considering its a stroked engine that is being made to rev
street 8's aren't generally made to rev to the s**t, therefore its not too common on street engines (consider price v useable power band on the street) |
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skidder
Fordmods - Getting Side Ways
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| Posted: Mon May 05, 2008 5:40 pm Post subject: |
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| and as ebxr8380 said, used in nascar (think of how the engines are driven and the powerband they sit in) |
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richie
Fordmods Stock as a Rock
Age:55
Posts: 169
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Location: perth WA, Australia
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| Posted: Wed May 07, 2008 11:21 am Post subject: |
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Spoke to my machinist/builder - he has done work with the Spintron. A number of Supercars teams have this machine. Yes, getting rid of the flex in the push rods goes a long way to fix the lifter problem. He said some have used push rods up to 1/2" dia.
We just need to work max size we can run & if it will fix the problem - then decide on HR vs Solid.
I suppose another way is to run a solid & adjust RR every oil change at 5000km.
Interesting point is that because rotating assembley is so light you can quickly lose momentum when clutch engages - so you stall unless you keep revs up. This is an issue with the supecars.
Given there is plenty of HP in this thing I will bolt an auto box. At least a spinning convertor full of oil will help.
Richie. |
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MICKYYYY
Fordmods - Getting Side Ways
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| Posted: Wed May 07, 2008 6:48 pm Post subject: engine |
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Thats it mate, go for a nice 3 speed with a 4000rpm converter and u will love it.
I know i did  |
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MICKYYYY
Fordmods - Getting Side Ways
Age:25
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| Posted: Thu May 08, 2008 4:06 pm Post subject: engine |
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Big power with auto and big converter = FUN
I know i loved it |
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XR9UTE
EFI Guru
Age:43
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| Posted: Thu May 08, 2008 4:17 pm Post subject: |
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| Nup auto's are boring, especially with a big power engine. |
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MICKYYYY
Fordmods - Getting Side Ways
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| Posted: Thu May 08, 2008 6:16 pm Post subject: engine |
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| LOL |
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