Hiya, thanks for the questions and sorry for the delay – had to get away from the kids homework and the wifes’ housework and then open up a box to double check – I wouldn’t want to make a gaff in front of the world here !
1) Did you used to sell through MJP Eastern Auto?
2) Do all the headers clear left hand drive S30 & S130 chassis?
I can’t honestly say yet – I’m waiting to test fit the two race versions but the Street-sport version fits. For the S130s, I can’t say for any yet - I’m waiting for my promised guinea pig 280ZX and dreading passing the steering box on the early versions.
3) What wall size & type of stainless are you using?
Street-sport = 1 5/8 primary pipes (40mm internal diameter leading to 2x 50mm secondarys)
Race-sport 1 5/8 = 1 5/8 primary pipes (40mm internal diameter leading to 2x 50mm secondarys)
Full race 1 3/4 = 1 3/4 primary pipes (42mm internal diameter leading to 2x 50mm secondarys)
All parts made in 201(austenitic) 1.25mm stainless-steel :
200 series’ steels - also referred to as chromium-manganese (CrMn) stainless steels are considered a cost effective substitute for 300 series stainless steels.
They are generally harder and stronger primarily due to their higher nitrogen content) that can provide an additional benefit of improved yield strength.
Series 200 stainless steels have excellent impact resistance and toughness, even in low temperatures.
Because they are austenitic*, the 200 series' of stainless steels are not magnetic.
*Austenitic steels are non-magnetic in the annealed condition.
Known for their formability and resistance to corrosion, austenitics are the most widely used grade of stainless steel.
They have good formability and weld-ability, as well as excellent toughness, particularly at low, even cryogenic, temperatures. Austenitic grades also have a low yield stress and relatively high tensile strength.
While austenitic steels are more expensive than ferritic stainless steels, they are generally more durable and corrosion resistant.
4) It appears from the photos that the race header has equal length primaries vs the street. Is this correct & what length are the equal length primaries?
Full Race = 1 3/4 primary pipes (42mm internal diameter leading to 2x 50mm secondarys)
Primary pipes = 920mm long, join of 3-1 at 700mm
Secondary pipe = 480mm long
Overall length from head to single pipe = 1m40cm
5) What is the collector to exhaust pipe size? I'm assuming that 2.5" is it based on header back exhaust you are also selling. Just nice to confirm.
The exhaust pipe is 2,54" (62mm internal diameter) all the way out to the rear
The future 'Z432' JDM rear silencer has a 62mm entry to mate with the exhaust system and 2x 50mm exits
6) Are the prices in U.S. dollars or GBP?
Quoted in USD (doesn’t the $ sign appear correctly ?).
Some other basic figures as promised :
The JDM rear silencer has a 62mm entry and 2x 50mm exits.
The flange thickness is 15mm and has a cut-out to allow for better fitting above the thermostat housing.
Rectangular ports :
The height of the manifold ports is 39mm
The width of the two inner ports is 36mm
The width of the 4x outer ports is 32mm
This plus the thick flange give amply opportunity to considerably machine out the ports where necessary.
gacksen - replied seperately - really nice engine you have !
Bludestiny - thanks - Nissan Primera BTCC specifications were my inspiration.