8882 Sir или Typеr? секретные материалы Опции

С периодичностью раз в месяц у кого-нибудь возникают вопрос: А в чем отличие Сира от Тайпэра?
ну двигатель, ну подвеска, ну коробка, ну салон - а толком то никто ничего и не скажет
да и сам скажу немного - валы другие, блок выше, Limited Slip Differential в стоке, тормоза лучше, прошивка другая и т.д.
недолгий поиск в сети помог разобраться в этом вопросе - пусть не на 100%, но это уже что-то - надо теперь дополнять
короче, инфа такая:

Highlights of B16B 98 Spec R compared to B16A

The translations for the numbered labels in the diagram are:

1) Cylinder Head - Complete port & polish
2) Exhaust Valve Spring - High-lift, dual-layered spring
3) Sparkplug - High-heat-type #7 platinum plug
4) Pistons - High-compression, low-friction, custom pistons
5) Connecting Rod - High-output, high-durability, lightened, custom conrod
6) Engine Stiffener - Aluminum die-cast, high-durability, one-piece type
7) Crankshaft - Full-balancer, 8-weight, high-output, custom crankshaft
8) Inlet Valves - Lightened inlet valves
9) Inlet Valve Springs - High-lift, flat-surfaced, dual-layered spring
10) Camshaft - Wide-angled, high-lift, high-durability camshaft
11) Intake Manifold - High-RPM type.

Engine specifications between B16A and B16B.


The camshaft profiles (wild cam) change from B16A 160ps to 170ps and finally to B16B are :

Different pistons are responsible for the compression ratio increases between 160ps & 170ps B16A and the 10.8 ratio for B16B. Readily apparent is the relatively modest change in piston top between B16A 160ps and B16A 170ps for the 10.2 to 10.4 change. However, the radically different piston top for B16B is very clear from the picture. The increase in compression ratio between B16B from B16A is 0.4.
The cut-outs on the piston top to accomodate for valve lift are basically the same between all three piston. This could meant that B16B camshafts can be installed into both 160ps and 170ps B16A without the need to change to B16B pistons.
On B16B, the inlet ports are manually ported to increase air-flow. The exhaust ports are identical to B16A.
B16B intake valve seats are at a different angle to B16A, 45 degrees vs 60 degrees. The intake valves are also different, being lighter and having a thinner valve stem.


On the left are the power curves for B16A 170ps versus B16B. Note the big gain in power after 6000rpm, the VTEC switch-over point between mild and wild cam profiles. The gain at extreme high rpms is readily apparent on the curves.
Various individual specifications for B16B can teach us about the feasibility of various modifications to B16A. For eg, the throttle bore diameter for B16B is identical to B16A at 60mm. This means that enlarged throttle bodies for B16A might not be an optimal mod or that a compromise in power delivery might result, eg loss of low-end power in return for gain in high-end power. Note that B16B has identical low and mid range power as B16A.
As with B18C Spec R, the wonder of B16B is the assurance of a 15 to 25ps gain in power on a B16A provided the tuning done by Honda can be completely replicated. Nevertheless even if only a portion can be duplicated, combining with properly designed aftermarket exhaust, headers, and intake could still potentially realize this 15ps gain. B16B engine parts are available from Honda and with care, most of them can be used on B16A for good power gains.


Honda Gearbox Ratios
The table below details the gearbox ratios that can be found in all of the different JDM (Japan Domestic Market) B series transmissions. It also details whether or not the transmission is available with an Limited Slip Differential (limited slip differential).

основные отличия по железу это блок 270 мм, заместо 263 мм, поршня с молибденовым покрытием и очень точной развесовкой, колено более горбатое, от сюда и блок выше, что бы балансирами не цеплял, структура коленвала другая и оно намного легче. лично пытался запизнуть b16b колено в b16a блок. шатуна уже на 2 мм по шейкам на колене. бошки одинаковые, только валы разные.
от отличиях можно продолжать и продолжать, но в моторе эти самые главные отличия.